Abstract

In this paper, we investigate the transmission impairments in a high-speed single-feeder wavelength-division-multiplexed passive optical network (WDM-PON) employing low-bandwidth upstream transmitter. A 1-GHz reflective semiconductor optical amplifier (RSOA) is operated at the rates of 10 Gb/s and 20 Gb/s in the proposed WDM-PON. Since the system performance is seriously limited by its uplink in both capacity and reach owing to inter-symbol interference and reflection noise, we present a novel technique with simultaneous capability of spectral efficiency enhancement and transmission distance extension in the uplink via coding and equalization that exploit the principles of partial-response (PR) signal. It is experimentally demonstrated that the proposed system supports the delivery of 10 Gb/s and 20 Gb/s upstream signals over 75-km and 25-km bidirectional fiber, respectively. The configuration of PR equalizer is optimized for its best performance-complexity trade-off. The reflection tolerance of 10 Gb/s and 20 Gb/s channels is improved by 8 dB and 6 dB, respectively, with PR coding. The proposed cost-effective signal processing scheme has great potential for the next-generation access networks.

© 2012 OSA

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References

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  1. G. Maier, M. Martinelli, A. Pattavina, and E. Salvadori, “Design and cost performance of the multistage WDM-PON access networks,” J. Lightwave Technol.18(2), 125–143 (2000).
    [CrossRef]
  2. A. Banerjee, Y. Park, F. Clarke, H. Song, S. H. Yang, G. Kramer, K. Kim, and B. Mukherjee, “Wavelength-division-multiplexed passive optical network (WDM-PON) technologies for broadband access: a review,” J. Opt. Netw.4(11), 737–758 (2005).
    [CrossRef]
  3. W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
    [CrossRef]
  4. T. Y. Kim and S. K. Han, “Reflective SOA-based bidirectional WDM-PON sharing optical source for up/downlink data and broadcasting transmission,” IEEE Photon. Technol. Lett.18(22), 2350–2352 (2006).
    [CrossRef]
  5. K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
    [CrossRef]
  6. Q. Guo and A. V. Tran, “Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON,” Electron. Lett.47(24), 1333–1334 (2011).
    [CrossRef]
  7. Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
    [CrossRef]
  8. Q. Guo and A. V. Tran, “20-Gb/s Single-Feeder WDM-PON Using Partial-response maximum likelihood equalizer,” IEEE Photon. Technol. Lett.23(23), 1802–1804 (2011).
    [CrossRef]
  9. M. Omella, V. Polo, J. Lazaro, B. Schrenk, and J. Prat, “10 Gb/s RSOA transmission by direct duobinary modulation,” Proc. European Conference on Optical Communication (ECOC), paper Tu.3.E.4 (2008).
  10. C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
    [CrossRef]
  11. M. Omella, I. Papagiannakis, B. Schrenk, D. Klonidis, J. A. Lázaro, A. N. Birbas, J. Kikidis, J. Prat, and I. Tomkos, “10 Gb/s full-duplex bidirectional transmission with RSOA-based ONU using detuned optical filtering and decision feedback equalization,” Opt. Express17(7), 5008–5013 (2009).
    [CrossRef] [PubMed]
  12. K. Y. Cho, A. Murakami, Y. J. Lee, A. Agata, Y. Takushima, and Y. C. Chung, “Demonstration of RSOA-based WDM PON operating at symmetric rate of 1.25 Gb/s with high reflection tolerance,” Proc. Optical Fiber Communication (OFC) Conference, paper OTuH4 (2008).
  13. S. P. Jung, Y. Takushima, K. Y. Cho, S. J. Park, and Y. C. Chung, “Demonstration of RSOA-based WDM PON employing self-homodyne receiver with high reflection tolerance,” Proc. Optical Fiber Communication (OFC) Conference, paper JWA69 (2009).
  14. M. Presi, A. Chiuchiarelli, R. Proietti, P. Choudhury, G. Contestabile, and E. Ciaramella, “Single Feeder Bidirectional WDM-PON with Enhanced Resilience to Rayleigh-Backscattering,” Proc. Optical Fiber Communication (OFC) Conference, paper OThG2 (2010).
  15. A. Murakami, Y. J. Lee, K. Y. Cho, Y. Takushima, A. Agata, K. Tanaka, Y. Horiuchi, and Y. C. Chung, “Enhanced reflection tolerance of upstream signal in RSOA-based WDM-PON using Manchester coding,” Proc. SPIE, paper 67832I (2007)
  16. F. Devaux, Y. Sorel, and J. F. Kerdiles, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,” J. Lightwave Technol.11(12), 1937–1940 (1993).
    [CrossRef]
  17. J. Xu, M. Li, and L.-K. Chen, “Rayleigh noise reduction in 10-Gb/s carrier distributed WDM-PONs using in-band optical filtering,” J. Lightwave Technol.29(24), 3632–3639 (2011).
    [CrossRef]
  18. R. K. Staubli and P. Gysel, “Statistical properties of single-mode fiber Rayleigh backscattered intensity and resulting detector current,” IEEE Trans. Commun.40(6), 1091–1097 (1992).
    [CrossRef]
  19. Q. Guo and A. V. Tran, “Improved Resilience to Reflection Noise for Remotely-seeded WDM-PON”, Proc. OptoElectronics and Communications Conference (OECC), paper 3A1–3 (2012).
  20. P. Kabal and S. Pasupathy, “Partial-response signaling,” IEEE. Trans. Commun. COM23(9), 921–934 (1975).
    [CrossRef]

2011 (5)

Q. Guo and A. V. Tran, “Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON,” Electron. Lett.47(24), 1333–1334 (2011).
[CrossRef]

Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
[CrossRef]

Q. Guo and A. V. Tran, “20-Gb/s Single-Feeder WDM-PON Using Partial-response maximum likelihood equalizer,” IEEE Photon. Technol. Lett.23(23), 1802–1804 (2011).
[CrossRef]

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

J. Xu, M. Li, and L.-K. Chen, “Rayleigh noise reduction in 10-Gb/s carrier distributed WDM-PONs using in-band optical filtering,” J. Lightwave Technol.29(24), 3632–3639 (2011).
[CrossRef]

2009 (1)

2008 (1)

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
[CrossRef]

2006 (1)

T. Y. Kim and S. K. Han, “Reflective SOA-based bidirectional WDM-PON sharing optical source for up/downlink data and broadcasting transmission,” IEEE Photon. Technol. Lett.18(22), 2350–2352 (2006).
[CrossRef]

2005 (2)

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

A. Banerjee, Y. Park, F. Clarke, H. Song, S. H. Yang, G. Kramer, K. Kim, and B. Mukherjee, “Wavelength-division-multiplexed passive optical network (WDM-PON) technologies for broadband access: a review,” J. Opt. Netw.4(11), 737–758 (2005).
[CrossRef]

2000 (1)

1993 (1)

F. Devaux, Y. Sorel, and J. F. Kerdiles, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,” J. Lightwave Technol.11(12), 1937–1940 (1993).
[CrossRef]

1992 (1)

R. K. Staubli and P. Gysel, “Statistical properties of single-mode fiber Rayleigh backscattered intensity and resulting detector current,” IEEE Trans. Commun.40(6), 1091–1097 (1992).
[CrossRef]

1975 (1)

P. Kabal and S. Pasupathy, “Partial-response signaling,” IEEE. Trans. Commun. COM23(9), 921–934 (1975).
[CrossRef]

Banerjee, A.

Birbas, A. N.

Chae, C. J.

Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
[CrossRef]

Chen, H. Y.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Chen, L.-K.

Cho, K. Y.

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
[CrossRef]

Cho, S. H.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Chow, C. W.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Chung, Y. C.

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
[CrossRef]

Clarke, F.

Devaux, F.

F. Devaux, Y. Sorel, and J. F. Kerdiles, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,” J. Lightwave Technol.11(12), 1937–1940 (1993).
[CrossRef]

Guo, Q.

Q. Guo and A. V. Tran, “Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON,” Electron. Lett.47(24), 1333–1334 (2011).
[CrossRef]

Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
[CrossRef]

Q. Guo and A. V. Tran, “20-Gb/s Single-Feeder WDM-PON Using Partial-response maximum likelihood equalizer,” IEEE Photon. Technol. Lett.23(23), 1802–1804 (2011).
[CrossRef]

Gysel, P.

R. K. Staubli and P. Gysel, “Statistical properties of single-mode fiber Rayleigh backscattered intensity and resulting detector current,” IEEE Trans. Commun.40(6), 1091–1097 (1992).
[CrossRef]

Han, S. K.

T. Y. Kim and S. K. Han, “Reflective SOA-based bidirectional WDM-PON sharing optical source for up/downlink data and broadcasting transmission,” IEEE Photon. Technol. Lett.18(22), 2350–2352 (2006).
[CrossRef]

Jeong, G.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Kabal, P.

P. Kabal and S. Pasupathy, “Partial-response signaling,” IEEE. Trans. Commun. COM23(9), 921–934 (1975).
[CrossRef]

Kerdiles, J. F.

F. Devaux, Y. Sorel, and J. F. Kerdiles, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,” J. Lightwave Technol.11(12), 1937–1940 (1993).
[CrossRef]

Kikidis, J.

Kim, B. W.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Kim, C.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Kim, K.

Kim, T. Y.

T. Y. Kim and S. K. Han, “Reflective SOA-based bidirectional WDM-PON sharing optical source for up/downlink data and broadcasting transmission,” IEEE Photon. Technol. Lett.18(22), 2350–2352 (2006).
[CrossRef]

Klonidis, D.

Kramer, G.

Lázaro, J. A.

Lee, J. H.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Lee, W.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Li, M.

Lin, Y. H.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Liu, Y.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Maier, G.

Martinelli, M.

Mukherjee, B.

Omella, M.

Pan, C. L.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Papagiannakis, I.

Park, M. Y.

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

Park, Y.

Pasupathy, S.

P. Kabal and S. Pasupathy, “Partial-response signaling,” IEEE. Trans. Commun. COM23(9), 921–934 (1975).
[CrossRef]

Pattavina, A.

Prat, J.

Salvadori, E.

Schrenk, B.

Song, H.

Sorel, Y.

F. Devaux, Y. Sorel, and J. F. Kerdiles, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,” J. Lightwave Technol.11(12), 1937–1940 (1993).
[CrossRef]

Staubli, R. K.

R. K. Staubli and P. Gysel, “Statistical properties of single-mode fiber Rayleigh backscattered intensity and resulting detector current,” IEEE Trans. Commun.40(6), 1091–1097 (1992).
[CrossRef]

Sung, J. Y.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Takushima, Y.

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
[CrossRef]

Tomkos, I.

Tran, A. V.

Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
[CrossRef]

Q. Guo and A. V. Tran, “Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON,” Electron. Lett.47(24), 1333–1334 (2011).
[CrossRef]

Q. Guo and A. V. Tran, “20-Gb/s Single-Feeder WDM-PON Using Partial-response maximum likelihood equalizer,” IEEE Photon. Technol. Lett.23(23), 1802–1804 (2011).
[CrossRef]

Wu, Y. F.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Xu, J.

Yang, S. H.

Yeh, C. H.

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

Electron. Lett. (2)

Q. Guo and A. V. Tran, “Reduction of backscattering noise in 2.5 and 10 Gbit/s RSOA-based WDM-PON,” Electron. Lett.47(24), 1333–1334 (2011).
[CrossRef]

C. W. Chow, C. H. Yeh, Y. F. Wu, H. Y. Chen, Y. H. Lin, J. Y. Sung, Y. Liu, and C. L. Pan, “13 Gbit/s WDM-OFDM PON using RSOA-based colourless ONU with seeding light source in local exchange,” Electron. Lett.47(22), 1235–1236 (2011).
[CrossRef]

IEEE Photon. Technol. Lett. (5)

Q. Guo, A. V. Tran, and C. J. Chae, “10-Gb/s WDM-PON based on low-bandwidth RSOA using partial response equalization,” IEEE Photon. Technol. Lett.23(20), 1442–1444 (2011).
[CrossRef]

Q. Guo and A. V. Tran, “20-Gb/s Single-Feeder WDM-PON Using Partial-response maximum likelihood equalizer,” IEEE Photon. Technol. Lett.23(23), 1802–1804 (2011).
[CrossRef]

W. Lee, M. Y. Park, S. H. Cho, J. H. Lee, C. Kim, G. Jeong, and B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett.17(11), 2460–2462 (2005).
[CrossRef]

T. Y. Kim and S. K. Han, “Reflective SOA-based bidirectional WDM-PON sharing optical source for up/downlink data and broadcasting transmission,” IEEE Photon. Technol. Lett.18(22), 2350–2352 (2006).
[CrossRef]

K. Y. Cho, Y. Takushima, and Y. C. Chung, “10-Gb/s Operation of RSOA for WDM PON,” IEEE Photon. Technol. Lett.20(18), 1533–1535 (2008).
[CrossRef]

IEEE Trans. Commun. (1)

R. K. Staubli and P. Gysel, “Statistical properties of single-mode fiber Rayleigh backscattered intensity and resulting detector current,” IEEE Trans. Commun.40(6), 1091–1097 (1992).
[CrossRef]

IEEE. Trans. Commun. COM (1)

P. Kabal and S. Pasupathy, “Partial-response signaling,” IEEE. Trans. Commun. COM23(9), 921–934 (1975).
[CrossRef]

J. Lightwave Technol. (3)

J. Opt. Netw. (1)

Opt. Express (1)

Other (6)

Q. Guo and A. V. Tran, “Improved Resilience to Reflection Noise for Remotely-seeded WDM-PON”, Proc. OptoElectronics and Communications Conference (OECC), paper 3A1–3 (2012).

M. Omella, V. Polo, J. Lazaro, B. Schrenk, and J. Prat, “10 Gb/s RSOA transmission by direct duobinary modulation,” Proc. European Conference on Optical Communication (ECOC), paper Tu.3.E.4 (2008).

K. Y. Cho, A. Murakami, Y. J. Lee, A. Agata, Y. Takushima, and Y. C. Chung, “Demonstration of RSOA-based WDM PON operating at symmetric rate of 1.25 Gb/s with high reflection tolerance,” Proc. Optical Fiber Communication (OFC) Conference, paper OTuH4 (2008).

S. P. Jung, Y. Takushima, K. Y. Cho, S. J. Park, and Y. C. Chung, “Demonstration of RSOA-based WDM PON employing self-homodyne receiver with high reflection tolerance,” Proc. Optical Fiber Communication (OFC) Conference, paper JWA69 (2009).

M. Presi, A. Chiuchiarelli, R. Proietti, P. Choudhury, G. Contestabile, and E. Ciaramella, “Single Feeder Bidirectional WDM-PON with Enhanced Resilience to Rayleigh-Backscattering,” Proc. Optical Fiber Communication (OFC) Conference, paper OThG2 (2010).

A. Murakami, Y. J. Lee, K. Y. Cho, Y. Takushima, A. Agata, K. Tanaka, Y. Horiuchi, and Y. C. Chung, “Enhanced reflection tolerance of upstream signal in RSOA-based WDM-PON using Manchester coding,” Proc. SPIE, paper 67832I (2007)

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Figures (13)

Fig. 1
Fig. 1

Frequency response of RSOA over (a) 0-10 GHz and (b) 0-1.5 GHz.

Fig. 2
Fig. 2

Responses of uplinks at different distances.

Fig. 3
Fig. 3

Configuration of single-feeder RSOA-based WDM-PON.

Fig. 4
Fig. 4

Dicode coding diagram; D is 1-bit delay.

Fig. 5
Fig. 5

Discrete system representation of the RSOA-based uplink with PR coding and PR equalization.

Fig. 6
Fig. 6

Spectra of (a) dicode, (b) triobinary, (c) duobinary, (d) 1-D3, (e) 1-D2 channels.

Fig. 7
Fig. 7

Experimental setup for transmission studies.

Fig. 8
Fig. 8

Block diagram of the DSP at the receiver.

Fig. 9
Fig. 9

BER curves of (a) 10-Gb/s 75-km channel and (b) 20-Gb/s 25-km channel.

Fig. 10
Fig. 10

BER vs. Distance for conventional 2 Gb/s and proposed 10 Gb/s system.

Fig. 11
Fig. 11

BER vs. Received power for 20 Gb/s channel at 0 km and 25 km.

Fig. 12
Fig. 12

Experimental setup for reflection studies.

Fig. 13
Fig. 13

BER vs. CSR for 10 Gb/s and 20 Gb/s transmission in the format of binary or dicode (all results are measured with PR-DFE).

Equations (8)

Equations on this page are rendered with MathJax. Learn more.

H(f)=cos[ π λ 0 2 D( λ o ) f 2 L c + tan 1 (α) ]
G(D)= k=0 N1 g k D k
A(D)= k=0 a k D k
B(D)= k=0 b k D k
B(D)=G(D)×A(D)
C(D)= A(D)×G(D)×(T(D)H(D)F(D))= A(D)×G(D)×W(D)
1- D 3 = (1-D) (1+D+ D 2 )
1- D 2 = (1-D) (1+D)

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