Abstract

We experimentally investigated the 1.25Gb/s operation of a spectrally sliced amplified spontaneous emission (ASE) injected reflective semiconductor optical amplifier (RSOA) with 50 GHz channel spacing using an injection current adjustment, dispersion management, and the use of an optical receiver with an optimized decision threshold level. We mitigated the relative intensity noise (RIN) degradation caused by post-filtering through the injection current adjustment, and also alleviated the dispersion-induced RIN degradation with the help of the dispersion management method. Finally, the use of an optical receiver with an optimized decision threshold level eliminated error floors, which were attributed to an unequal noise distribution between the mark level and the space level. We also successfully demonstrated a loop-back wavelength division multiplexing–passive optical network (WDM-PON) with a 100Gb/s (80×1.25Gb/s) capacity using a spectrally sliced ASE injected RSOA by means of the three aforementioned methods. We also analyzed and examined the transmission impairments, such as the dispersion penalty and back-reflection induced penalty, in a 1.25Gb/s bidirectional WDM-PON based on an RSOA with 50 GHz channel spacing.

© 2013 Optical Society of America

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2011 (1)

S. H. Cho, S. S. Lee, and D. W. Shin, “Impact of wavelength detuning on upstream transmission in a loop-back WDM-PON based on reflective-SOA,” Opt. Commun., vol.  284, pp. 1951–1954, Apr. 2011.
[CrossRef]

2010 (4)

S. H. Cho, S. S. Lee, and D. W. Shin, “Improving upstream transmission performance using a receiver with decision threshold level adjustment in a loopback WDM-PON,” Opt. Fiber Technol., vol.  16, pp. 129–134, Mar. 2010.
[CrossRef]

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Transmission performance enhancement for EIN limited 2.5  Gbit/s RSOA-based WDM-PON by using dispersion management,” Electron. Lett., vol.  46, no. 9, pp. 636–638, Apr. 2010.
[CrossRef]

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

2009 (3)

K. Y. Cho, Y. J. Lee, H. Y. Choi, A. Murakami, A. Agata, Y. Takushima, Y. C. Chung, “Effects of reflection in RSOA-based WDM PON utilizing remodulation technique,” J. Lightwave Technol., vol.  27, no. 10, pp. 1286–1295, May 2009.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation of a spectrum-sliced Fabry–Pérot laser diode with intensity noise suppression by a second Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 587–589, May 2009.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation at 50 GHz channel spacing based on intensity noise suppression of wavelength-locked Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 602–604, May 2009.
[CrossRef]

2008 (2)

2007 (2)

J. B. Jensen, I. T. Monroy, R. Kjær, and P. Jeppesen, “Reflective SOA re-modulated 20  Gbit/s RZ-DQPSK over distributed Raman amplified 80 km long reach PON link,” Opt. Express, vol.  15, no. 9, pp. 5376–5381, 2007.
[CrossRef]

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

2006 (3)

2005 (3)

A. D. McCoy, P. Horak, B. C. Thomsen, M. Ibsen, and D. J. Richardson, “Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  23, no. 8, pp. 2399–2409, Aug. 2005.
[CrossRef]

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

2004 (1)

2003 (1)

2002 (1)

M. Zhao, G. Morthier, and R. Baets, “Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier,” IEEE Photon. Technol. Lett., vol.  14, no. 3, pp. 390–392, Mar. 2002.
[CrossRef]

2001 (2)

K. Sato and H. Toba, “Reduction of mode partition noise by using semiconductor optical amplifiers,” IEEE J. Sel. Top. Quantum Electron., vol.  7, no. 2, pp. 328–333, Mar. 2001.
[CrossRef]

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

2000 (1)

H. D. Kim, S. G. Kang, and C. H. Lee, “Low-cost WDM source with an ASE injected Fabry–Perot semiconductor laser,” IEEE Photon. Technol. Lett., vol.  12, no. 8, pp. 1067–1069, Aug. 2000.
[CrossRef]

1996 (1)

G. J. Pendock and D. D. Sampson, “Transmission performance of high bit rate spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  14, no. 10, pp. 2141–2148, Nov. 1996.
[CrossRef]

Agata, A.

Ahn, J. G.

Baets, R.

M. Zhao, G. Morthier, and R. Baets, “Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier,” IEEE Photon. Technol. Lett., vol.  14, no. 3, pp. 390–392, Mar. 2002.
[CrossRef]

Cho, K. Y.

K. Y. Cho, Y. J. Lee, H. Y. Choi, A. Murakami, A. Agata, Y. Takushima, Y. C. Chung, “Effects of reflection in RSOA-based WDM PON utilizing remodulation technique,” J. Lightwave Technol., vol.  27, no. 10, pp. 1286–1295, May 2009.
[CrossRef]

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10  Gb/s operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett., vol.  20, no. 18, pp. 1533–1535, Sept. 2008.
[CrossRef]

Cho, S. H.

S. H. Cho, S. S. Lee, and D. W. Shin, “Impact of wavelength detuning on upstream transmission in a loop-back WDM-PON based on reflective-SOA,” Opt. Commun., vol.  284, pp. 1951–1954, Apr. 2011.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Improving upstream transmission performance using a receiver with decision threshold level adjustment in a loopback WDM-PON,” Opt. Fiber Technol., vol.  16, pp. 129–134, Mar. 2010.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Transmission performance enhancement for EIN limited 2.5  Gbit/s RSOA-based WDM-PON by using dispersion management,” Electron. Lett., vol.  46, no. 9, pp. 636–638, Apr. 2010.
[CrossRef]

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Choi, B. S.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Choi, H. Y.

Choi, K. M.

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

Christiansen, L. J.

Chung, Y. C.

K. Y. Cho, Y. J. Lee, H. Y. Choi, A. Murakami, A. Agata, Y. Takushima, Y. C. Chung, “Effects of reflection in RSOA-based WDM PON utilizing remodulation technique,” J. Lightwave Technol., vol.  27, no. 10, pp. 1286–1295, May 2009.
[CrossRef]

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10  Gb/s operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett., vol.  20, no. 18, pp. 1533–1535, Sept. 2008.
[CrossRef]

Ford, C.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Healey, P.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Horak, P.

Hwang, S. T.

Ibsen, M.

Iga, K.

F. Koyama, T. Yamatoya, and K. Iga, “Highly gain-saturated GaInAsP/InP SOA modulator for incoherent spectrum-sliced light source,” Proc. ICIPRM, Williamsburg, VA, May 2000, pp. 439–442.

Jensen, J. B.

Jeong, J. S.

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation at 50 GHz channel spacing based on intensity noise suppression of wavelength-locked Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 602–604, May 2009.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation of a spectrum-sliced Fabry–Pérot laser diode with intensity noise suppression by a second Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 587–589, May 2009.
[CrossRef]

Jeong, K. T.

Jeppesen, P.

Johnston, L.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Jung, E. S.

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Jung, G.

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Kang, S. G.

H. D. Kim, S. G. Kang, and C. H. Lee, “Low-cost WDM source with an ASE injected Fabry–Perot semiconductor laser,” IEEE Photon. Technol. Lett., vol.  12, no. 8, pp. 1067–1069, Aug. 2000.
[CrossRef]

Kang, S. J.

Kim, B. W.

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Kim, B. Y.

Kim, C.

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

Kim, C. Y.

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Kim, D. C.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Kim, G. Y.

J. H. Park, G. Y. Kim, H. J. Park, and J. H. Kim, “FTTH deployment status & strategy in Korea,” Proc. Globecom, New Orleans, LA, Nov. 2008.

Kim, H.

Kim, H. D.

H. D. Kim, S. G. Kang, and C. H. Lee, “Low-cost WDM source with an ASE injected Fabry–Perot semiconductor laser,” IEEE Photon. Technol. Lett., vol.  12, no. 8, pp. 1067–1069, Aug. 2000.
[CrossRef]

Kim, J. H.

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

J. H. Park, G. Y. Kim, H. J. Park, and J. H. Kim, “FTTH deployment status & strategy in Korea,” Proc. Globecom, New Orleans, LA, Nov. 2008.

H. J. Park, J. H. Park, and J. H. Kim, “Network infrastructure for Giga Internet service: trial deployment and prospects,” in Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

Kim, J. Y.

Kim, S. H.

Kjær, R.

Koh, J. S.

Koyama, F.

F. Koyama, T. Yamatoya, and K. Iga, “Highly gain-saturated GaInAsP/InP SOA modulator for incoherent spectrum-sliced light source,” Proc. ICIPRM, Williamsburg, VA, May 2000, pp. 439–442.

Kwon, O. K.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Lealman, I.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Lee, C. H.

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation of a spectrum-sliced Fabry–Pérot laser diode with intensity noise suppression by a second Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 587–589, May 2009.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation at 50 GHz channel spacing based on intensity noise suppression of wavelength-locked Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 602–604, May 2009.
[CrossRef]

S. G. Mun, J. H. Moon, H. K. Lee, J. Y. Kim, and C. H. Lee, “A WDM-PON with a 40  Gb/s (32×1.25  Gb/s) capacity based on wavelength-locked Fabry-Perot laser diodes,” Opt. Express, vol.  16, no. 15, pp. 11361–11368, July 2008.
[CrossRef]

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

C. H. Lee, W. V. Sorin, and B. Y. Kim, “Fiber to the home using a PON infrastructure,” J. Lightwave Technol., vol.  24, no. 12, pp. 4568–4583, Dec. 2006.
[CrossRef]

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

S. J. Park, C. H. Lee, K. T. Jeong, H. J. Park, J. G. Ahn, and K. H. Song, “Fiber-to-the-home services based on wavelength-division-multiplexing passive optical network,” J. Lightwave Technol., vol.  22, no. 11, pp. 2582–2591, Nov. 2004.
[CrossRef]

H. D. Kim, S. G. Kang, and C. H. Lee, “Low-cost WDM source with an ASE injected Fabry–Perot semiconductor laser,” IEEE Photon. Technol. Lett., vol.  12, no. 8, pp. 1067–1069, Aug. 2000.
[CrossRef]

Lee, E. G.

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

Lee, H. H.

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

Lee, H. K.

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation of a spectrum-sliced Fabry–Pérot laser diode with intensity noise suppression by a second Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 587–589, May 2009.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation at 50 GHz channel spacing based on intensity noise suppression of wavelength-locked Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 602–604, May 2009.
[CrossRef]

S. G. Mun, J. H. Moon, H. K. Lee, J. Y. Kim, and C. H. Lee, “A WDM-PON with a 40  Gb/s (32×1.25  Gb/s) capacity based on wavelength-locked Fabry-Perot laser diodes,” Opt. Express, vol.  16, no. 15, pp. 11361–11368, July 2008.
[CrossRef]

Lee, J.

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

Lee, J. H.

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Lee, S. H.

Lee, S. M.

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

Lee, S. S.

S. H. Cho, S. S. Lee, and D. W. Shin, “Impact of wavelength detuning on upstream transmission in a loop-back WDM-PON based on reflective-SOA,” Opt. Commun., vol.  284, pp. 1951–1954, Apr. 2011.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Improving upstream transmission performance using a receiver with decision threshold level adjustment in a loopback WDM-PON,” Opt. Fiber Technol., vol.  16, pp. 129–134, Mar. 2010.
[CrossRef]

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Transmission performance enhancement for EIN limited 2.5  Gbit/s RSOA-based WDM-PON by using dispersion management,” Electron. Lett., vol.  46, no. 9, pp. 636–638, Apr. 2010.
[CrossRef]

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

Lee, W. R.

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Lee, Y. J.

McCoy, A. D.

Monroy, I. T.

Moon, J. H.

S. G. Mun, J. H. Moon, H. K. Lee, J. Y. Kim, and C. H. Lee, “A WDM-PON with a 40  Gb/s (32×1.25  Gb/s) capacity based on wavelength-locked Fabry-Perot laser diodes,” Opt. Express, vol.  16, no. 15, pp. 11361–11368, July 2008.
[CrossRef]

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

Moore, R.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Mørk, J.

Morthier, G.

M. Zhao, G. Morthier, and R. Baets, “Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier,” IEEE Photon. Technol. Lett., vol.  14, no. 3, pp. 390–392, Mar. 2002.
[CrossRef]

Mun, S. G.

S. G. Mun, J. H. Moon, H. K. Lee, J. Y. Kim, and C. H. Lee, “A WDM-PON with a 40  Gb/s (32×1.25  Gb/s) capacity based on wavelength-locked Fabry-Perot laser diodes,” Opt. Express, vol.  16, no. 15, pp. 11361–11368, July 2008.
[CrossRef]

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

Murakami, A.

Oh, Y. J.

Öhman, F.

Park, H. J.

S. J. Park, C. H. Lee, K. T. Jeong, H. J. Park, J. G. Ahn, and K. H. Song, “Fiber-to-the-home services based on wavelength-division-multiplexing passive optical network,” J. Lightwave Technol., vol.  22, no. 11, pp. 2582–2591, Nov. 2004.
[CrossRef]

J. H. Park, G. Y. Kim, H. J. Park, and J. H. Kim, “FTTH deployment status & strategy in Korea,” Proc. Globecom, New Orleans, LA, Nov. 2008.

H. J. Park, J. H. Park, and J. H. Kim, “Network infrastructure for Giga Internet service: trial deployment and prospects,” in Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

Park, J. H.

H. J. Park, J. H. Park, and J. H. Kim, “Network infrastructure for Giga Internet service: trial deployment and prospects,” in Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

J. H. Park, G. Y. Kim, H. J. Park, and J. H. Kim, “FTTH deployment status & strategy in Korea,” Proc. Globecom, New Orleans, LA, Nov. 2008.

Park, M. Y.

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

Park, S. J.

Pendock, G. J.

G. J. Pendock and D. D. Sampson, “Transmission performance of high bit rate spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  14, no. 10, pp. 2141–2148, Nov. 1996.
[CrossRef]

Perrin, S.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Peucheret, C.

Richardson, D. J.

Rivers, L.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Sampson, D. D.

G. J. Pendock and D. D. Sampson, “Transmission performance of high bit rate spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  14, no. 10, pp. 2141–2148, Nov. 1996.
[CrossRef]

Sato, K.

K. Sato and H. Toba, “Reduction of mode partition noise by using semiconductor optical amplifiers,” IEEE J. Sel. Top. Quantum Electron., vol.  7, no. 2, pp. 328–333, Mar. 2001.
[CrossRef]

Shin, D. W.

S. H. Cho, S. S. Lee, and D. W. Shin, “Impact of wavelength detuning on upstream transmission in a loop-back WDM-PON based on reflective-SOA,” Opt. Commun., vol.  284, pp. 1951–1954, Apr. 2011.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Improving upstream transmission performance using a receiver with decision threshold level adjustment in a loopback WDM-PON,” Opt. Fiber Technol., vol.  16, pp. 129–134, Mar. 2010.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Transmission performance enhancement for EIN limited 2.5  Gbit/s RSOA-based WDM-PON by using dispersion management,” Electron. Lett., vol.  46, no. 9, pp. 636–638, Apr. 2010.
[CrossRef]

Song, K. H.

Sorin, W. V.

Sugie, T.

Sung, B. H.

Takesue, H.

Takushima, Y.

K. Y. Cho, Y. J. Lee, H. Y. Choi, A. Murakami, A. Agata, Y. Takushima, Y. C. Chung, “Effects of reflection in RSOA-based WDM PON utilizing remodulation technique,” J. Lightwave Technol., vol.  27, no. 10, pp. 1286–1295, May 2009.
[CrossRef]

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10  Gb/s operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett., vol.  20, no. 18, pp. 1533–1535, Sept. 2008.
[CrossRef]

Thomsen, B. C.

Toba, H.

K. Sato and H. Toba, “Reduction of mode partition noise by using semiconductor optical amplifiers,” IEEE J. Sel. Top. Quantum Electron., vol.  7, no. 2, pp. 328–333, Mar. 2001.
[CrossRef]

Townley, P.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Townsend, P.

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

Yamatoya, T.

F. Koyama, T. Yamatoya, and K. Iga, “Highly gain-saturated GaInAsP/InP SOA modulator for incoherent spectrum-sliced light source,” Proc. ICIPRM, Williamsburg, VA, May 2000, pp. 439–442.

Yu, J. H.

Yvind, K.

Zhao, M.

M. Zhao, G. Morthier, and R. Baets, “Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier,” IEEE Photon. Technol. Lett., vol.  14, no. 3, pp. 390–392, Mar. 2002.
[CrossRef]

Electron. Lett. (2)

P. Healey, P. Townsend, C. Ford, L. Johnston, P. Townley, I. Lealman, L. Rivers, S. Perrin, and R. Moore, “Spectral slicing WDM-PON using wavelength-seeded reflective SOAs,” Electron. Lett., vol.  37, no. 19, pp. 1181–1182, Sept. 2001.
[CrossRef]

S. H. Cho, S. S. Lee, and D. W. Shin, “Transmission performance enhancement for EIN limited 2.5  Gbit/s RSOA-based WDM-PON by using dispersion management,” Electron. Lett., vol.  46, no. 9, pp. 636–638, Apr. 2010.
[CrossRef]

ETRI J. (1)

H. H. Lee, S. H. Cho, E. G. Lee, and S. S. Lee, “Demonstration of RSOA-based 20  Gb/s linear bus WDM-PON with simple optical add-drop node structure,” ETRI J., vol.  32, no. 2, pp. 248–254, Apr. 2010.
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

K. Sato and H. Toba, “Reduction of mode partition noise by using semiconductor optical amplifiers,” IEEE J. Sel. Top. Quantum Electron., vol.  7, no. 2, pp. 328–333, Mar. 2001.
[CrossRef]

IEEE Photon. Technol. Lett. (8)

S. M. Lee, K. M. Choi, S. G. Mun, J. H. Moon, and C. H. Lee, “Dense WDM-PON based on wavelength-locked Fabry–Pérot laser diodes,” IEEE Photon. Technol. Lett., vol.  17, no. 7, pp. 1579–1581, July 2005.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation at 50 GHz channel spacing based on intensity noise suppression of wavelength-locked Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 602–604, May 2009.
[CrossRef]

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10  Gb/s operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett., vol.  20, no. 18, pp. 1533–1535, Sept. 2008.
[CrossRef]

J. S. Jeong, H. K. Lee, and C. H. Lee, “1.25  Gb/s operation of a spectrum-sliced Fabry–Pérot laser diode with intensity noise suppression by a second Fabry–Pérot laser diode,” IEEE Photon. Technol. Lett., vol.  21, no. 9, pp. 587–589, May 2009.
[CrossRef]

W. R. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jung, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett., vol.  17, no. 11, pp. 2460–2462, Nov. 2005.
[CrossRef]

H. D. Kim, S. G. Kang, and C. H. Lee, “Low-cost WDM source with an ASE injected Fabry–Perot semiconductor laser,” IEEE Photon. Technol. Lett., vol.  12, no. 8, pp. 1067–1069, Aug. 2000.
[CrossRef]

J. H. Moon, K. M. Choi, S. G. Mun, and C. H. Lee, “Effects of back-reflection in WDM-PONs based on seed light injection,” IEEE Photon. Technol. Lett., vol.  19, no. 24, pp. 2045–2047, Dec. 2007.
[CrossRef]

M. Zhao, G. Morthier, and R. Baets, “Analysis and optimization of intensity noise reduction in spectrum-sliced WDM systems using a saturated semiconductor optical amplifier,” IEEE Photon. Technol. Lett., vol.  14, no. 3, pp. 390–392, Mar. 2002.
[CrossRef]

J. Lightwave Technol. (8)

C. H. Lee, W. V. Sorin, and B. Y. Kim, “Fiber to the home using a PON infrastructure,” J. Lightwave Technol., vol.  24, no. 12, pp. 4568–4583, Dec. 2006.
[CrossRef]

K. Y. Cho, Y. J. Lee, H. Y. Choi, A. Murakami, A. Agata, Y. Takushima, Y. C. Chung, “Effects of reflection in RSOA-based WDM PON utilizing remodulation technique,” J. Lightwave Technol., vol.  27, no. 10, pp. 1286–1295, May 2009.
[CrossRef]

J. H. Lee, S. H. Cho, H. H. Lee, E. S. Jung, J. H. Yu, B. W. Kim, S. H. Lee, J. S. Koh, B. H. Sung, S. J. Kang, J. H. Kim, K. T. Jeong, and S. S. Lee, “First commercial deployment of a colorless gigabit WDM/TDM hybrid PON system using remote protocol terminator,” J. Lightwave Technol., vol.  28, no. 4, pp. 344–351, Feb. 2010.
[CrossRef]

H. Takesue and T. Sugie, “Wavelength channel data rewrite using saturated SOA modulator for WDM networks with centralized light sources,” J. Lightwave Technol., vol.  21, no. 11, pp. 2546–2556, Nov. 2003.
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S. J. Park, C. H. Lee, K. T. Jeong, H. J. Park, J. G. Ahn, and K. H. Song, “Fiber-to-the-home services based on wavelength-division-multiplexing passive optical network,” J. Lightwave Technol., vol.  22, no. 11, pp. 2582–2591, Nov. 2004.
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A. D. McCoy, P. Horak, B. C. Thomsen, M. Ibsen, and D. J. Richardson, “Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  23, no. 8, pp. 2399–2409, Aug. 2005.
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H. Kim, S. H. Kim, S. T. Hwang, and Y. J. Oh, “Impact of dispersion, PMD, and PDL on the performance of spectrum-sliced incoherent light sources using gain-saturated semiconductor optical amplifiers,” J. Lightwave Technol., vol.  24, no. 2, pp. 775–785, Feb. 2006.
[CrossRef]

G. J. Pendock and D. D. Sampson, “Transmission performance of high bit rate spectrum-sliced WDM systems,” J. Lightwave Technol., vol.  14, no. 10, pp. 2141–2148, Nov. 1996.
[CrossRef]

Opt. Commun. (1)

S. H. Cho, S. S. Lee, and D. W. Shin, “Impact of wavelength detuning on upstream transmission in a loop-back WDM-PON based on reflective-SOA,” Opt. Commun., vol.  284, pp. 1951–1954, Apr. 2011.
[CrossRef]

Opt. Express (3)

Opt. Fiber Technol. (1)

S. H. Cho, S. S. Lee, and D. W. Shin, “Improving upstream transmission performance using a receiver with decision threshold level adjustment in a loopback WDM-PON,” Opt. Fiber Technol., vol.  16, pp. 129–134, Mar. 2010.
[CrossRef]

Other (9)

J. H. Lee, J. H. Lee, S. H. Cho, E. G. Lee, H. H. Lee, and S. S. Lee, “Wavelength-dependent characteristics of RSOA for color-free operations,” Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

W. R. Lee, S. H. Cho, M. Y. Park, J. H. Lee, C. Y. Kim, G. Jung, and B. W. Kim, “Optical transceiver employing an RSOA with feed-forward current injection,” Proc. OFC/NFOEC, Anaheim, CA, 2007.

“Broadband Optical Access Systems Based on Passive Optical Networks (PON),” ITU-T Recommendation G.983.1, 2005.

F. Koyama, T. Yamatoya, and K. Iga, “Highly gain-saturated GaInAsP/InP SOA modulator for incoherent spectrum-sliced light source,” Proc. ICIPRM, Williamsburg, VA, May 2000, pp. 439–442.

“NRZ bandwidth (-3db HF cutoff vs SNR) how much bandwidth is enough?” White Paper 02XXX-WTP-001-A, Mindspeed Technologies, March 28, 2003 [Online]. Available: http://www.mindspeed.com/assets/001/02XXX-WTP-001-A.pdf .

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, and S. S. Lee, “1.25  Gb/s operation of ASE injected RSOA with 50 GHz channel spacing by using injection current adjustment, dispersion management and receiver with decision threshold level control,” Proc. ICTON, Munich, Germany, 2010.

S. H. Cho, J. H. Lee, J. H. Lee, E. G. Lee, H. H. Lee, E. S. Jung, B. S. Choi, D. C. Kim, O. K. Kwon, and S. S. Lee, “Demonstrations of RSOA based loop-back WDM-PON with 100  Gb/s (8×1.25  Gb/s) capacity employing spectrum sliced incoherent light injection,” Proc. ECOC, Torino, Italy, Sept. 2010.

H. J. Park, J. H. Park, and J. H. Kim, “Network infrastructure for Giga Internet service: trial deployment and prospects,” in Proc. 9th Int. Conf. Optical Internet (COIN), Jeju, South Korea, July 2010.

J. H. Park, G. Y. Kim, H. J. Park, and J. H. Kim, “FTTH deployment status & strategy in Korea,” Proc. Globecom, New Orleans, LA, Nov. 2008.

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Figures (16)

Fig. 1.
Fig. 1.

(a) Internal structure of our employed RSOA and (b) SEM image of RSOA chip surface.

Fig. 2.
Fig. 2.

(a) Measured fiber-to-fiber gain characteristics of the RSOA and (b) ASE gain spectra of the RSOA at different injection currents into the RSOA.

Fig. 3.
Fig. 3.

Experimental setup for RIN measurements.

Fig. 4.
Fig. 4.

Experimental setup for investigating the upstream and downstream transmission performance.

Fig. 5.
Fig. 5.

Measured optical spectra at different injection currents into the RSOA (a) before and (b) after the post-filtering.

Fig. 6.
Fig. 6.

Measured RIN levels at different injection currents into the RSOA (a) before and (b) after the post-filtering.

Fig. 7.
Fig. 7.

RIN degradation by post-filtering.

Fig. 8.
Fig. 8.

Measured BER plots when the injection current into the RSOA was set to 41 and 82 mA.

Fig. 9.
Fig. 9.

Measured RIN values of initially intensity noise suppressed RSOA output for various combinations of dispersive media.

Fig. 10.
Fig. 10.

Measured BER plots with and without a CD management method.

Fig. 11.
Fig. 11.

Measured BER plots using a receiver with an optimized decision threshold level. (DTL means decision threshold level.)

Fig. 12.
Fig. 12.

Measured optical spectra of 80 upstream channels at the OLT-side.

Fig. 13.
Fig. 13.

Photograph of our experimental setup for demonstrations of a WDM-PON with 100Gb/s capacity.

Fig. 14.
Fig. 14.

Measured BER plots for 80-channel (a) downstream and (b) upstream signals. The insets show the measured optical eye patterns for upstream and downstream channel 21.

Fig. 15.
Fig. 15.

Internal structure of reflection emulators, R1 and R2.

Fig. 16.
Fig. 16.

(a) Measured downstream and (b) upstream BER plots at different back-reflection ratios in a WDM-PON link.

Tables (1)

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TABLE I Details of the Optical Parameters of the Utilized Fibers in WDM-PON

Equations (1)

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QV1(t)γσ1=γV0(t)σ0,