Abstract

We experimentally demonstrate amplification of 1.28 Tb/s DWDM channels using a bidirectional fiber optical parametric amplifier. The amplifier can provide more than 13 dB on-off gain on all 32 DWDM channels. Error-free operation has been achieved for all data streams, with an average power penalty of 2.5 dB compared with conventional unidirectional configuration.

© 2014 Optical Society of America

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References

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  1. M. E. Marhic, Fiber Optical Parametric Amplifiers, Oscillators and Related Devices (Cambridge University, 2007).
  2. N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
    [CrossRef]
  3. M. Jazayerifar, S. Warm, R. Elschner, D. Kroushkov, I. Sackey, C. Meuer, C. Schubert, K. Petermann, “Performance evaluation of DWDM communication systems with fiber optical parametric amplifiers,” J. Lightwave Technol. 31(9), 1454–1461 (2013).
    [CrossRef]
  4. W. Lee, M. Y. Park, S. H. Cho, J. Lee, C. Kim, G. Jeong, B. W. Kim, “Bidirectional WDM-PON based on gain-saturated reflective semiconductor optical amplifiers,” IEEE Photon. Technol. Lett. 17(11), 2460–2462 (2005).
    [CrossRef]
  5. J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
    [CrossRef]
  6. V. Mizrahi, “Bidirectional WDM optical communication systems with bidirectional optical amplifiers,” Ciena Corp., US Patent 5,742,416 (1998).
  7. S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
    [CrossRef]
  8. I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
    [CrossRef]
  9. K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
    [CrossRef]
  10. T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
    [CrossRef]
  11. G. Kalogerakis, M. E. Marhic, K. Uesaka, K. Shimizu, K. K.-Y. Wong, L. G. Kazovsky, “Methods for full utilization of the bandwidth of fiber optical parametric amplifiers and wavelength converters,” J. Lightwave Technol. 24(10), 3683–3690 (2006).
    [CrossRef]
  12. K. S. Yeo, F. R. M. Adikan, M. Mokhtar, S. Hitam, M. A. Mahdi, “Fiber optical parametric amplifier with double-pass pump configuration,” Opt. Express 21(25), 31623–31631 (2013).
    [CrossRef] [PubMed]
  13. E. Myslivets, N. Alic, S. Moro, B. P. P. Kuo, R. M. Jopson, C. J. McKinstrie, M. Karlsson, S. Radic, “1.56-micros continuously tunable parametric delay line for a 40-Gb/s signal,” Opt. Express 17(14), 11958–11964 (2009).
    [CrossRef] [PubMed]
  14. B. P.-P. Kuo, E. Myslivets, A. O. J. Wiberg, S. Zlatanovic, C.-S. Brès, S. Moro, F. Gholami, A. Peric, N. Alic, S. Radic, “Transmission of 640-Gb/s RZ-OOK channel over 100-km SSMF by wavelength-transparent conjugation,” J. Lightwave Technol. 29(4), 516–523 (2011).
    [CrossRef]
  15. J. D. Marconi, J. M. Chavez Boggio, H. L. Fragnito, and S. R. Bickham, “Nearly 100 nm bandwidth of flat gain with a double-pumped fiber optic parametric amplifier,” in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper OWB1.
    [CrossRef]
  16. K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
    [CrossRef]

2013

2012

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

2011

2009

2008

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

2006

2005

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

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

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

2002

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

Abraham, C.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Adikan, F. R. M.

Alic, N.

Andrekson, P. A.

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

Arellano, C.

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

Bernasconi, P.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Bock, C.

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

Brès, C.-S.

Centanni, J.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Chandrasekhar, S.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Cho, S. H.

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

Copner, N.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Doran, N. J.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

El Dahdah, N.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

Elschner, R.

Gholami, F.

Govan, D. S.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

Hitam, S.

Jamshidifar, M.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

Jazayerifar, M.

Jeong, G.

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

Jeppesen, P.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Jopson, R. M.

Kalogerakis, G.

Karlsson, M.

E. Myslivets, N. Alic, S. Moro, B. P. P. Kuo, R. M. Jopson, C. J. McKinstrie, M. Karlsson, S. Radic, “1.56-micros continuously tunable parametric delay line for a 40-Gb/s signal,” Opt. Express 17(14), 11958–11964 (2009).
[CrossRef] [PubMed]

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

Kazovsky, L. G.

G. Kalogerakis, M. E. Marhic, K. Uesaka, K. Shimizu, K. K.-Y. Wong, L. G. Kazovsky, “Methods for full utilization of the bandwidth of fiber optical parametric amplifiers and wavelength converters,” J. Lightwave Technol. 24(10), 3683–3690 (2006).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

Kim, B. W.

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

Kjær, R.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Kroushkov, D.

Kuo, B. P. P.

Kuo, B. P.-P.

Lee, J.

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

Mahdi, M. A.

Marhic, M. E.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

G. Kalogerakis, M. E. Marhic, K. Uesaka, K. Shimizu, K. K.-Y. Wong, L. G. Kazovsky, “Methods for full utilization of the bandwidth of fiber optical parametric amplifiers and wavelength converters,” J. Lightwave Technol. 24(10), 3683–3690 (2006).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

McKinstrie, C. J.

Meuer, C.

Mokhtar, M.

Moro, S.

Myslivets, E.

Öhman, F.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Olsson, B.-E.

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

Park, M. Y.

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

Peric, A.

Petermann, K.

Polo, V.

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

Prat, J.

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

Radic, S.

Sackey, I.

Schubert, C.

Shimizu, K.

Sunnerud, H.

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

Tafur Monroy, I.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Tan, K.

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

Torounidis, T.

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

Uesaka, K.

G. Kalogerakis, M. E. Marhic, K. Uesaka, K. Shimizu, K. K.-Y. Wong, L. G. Kazovsky, “Methods for full utilization of the bandwidth of fiber optical parametric amplifiers and wavelength converters,” J. Lightwave Technol. 24(10), 3683–3690 (2006).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

Warm, S.

Wiberg, A. O. J.

Wong, K. K. Y.

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

Wong, K. K.-Y.

Yeo, K. S.

Yvind, K.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Zlatanovic, S.

IEEE J. Sel. Top. Quantum Electron.

N. El Dahdah, D. S. Govan, M. Jamshidifar, N. J. Doran, M. E. Marhic, “Fiber optical parametric amplifier performance in a 1-Tb/s DWDM communication system,” IEEE J. Sel. Top. Quantum Electron. 18(2), 950–957 (2012).
[CrossRef]

IEEE Photon. Technol. Lett.

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

J. Prat, C. Arellano, V. Polo, C. Bock, “Optical network unit based on a bidirectional reflective semiconductor optical amplifier for fiber-to-the-home networks,” IEEE Photon. Technol. Lett. 17(1), 250–252 (2005).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent one-pump fiber-optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(11), 1506–1508 (2002).
[CrossRef]

T. Torounidis, B.-E. Olsson, H. Sunnerud, M. Karlsson, P. A. Andrekson, “Fiber-optic parametric amplifier in a loop mirror configuration,” IEEE Photon. Technol. Lett. 17(2), 321–323 (2005).
[CrossRef]

S. Radic, S. Chandrasekhar, P. Bernasconi, J. Centanni, C. Abraham, N. Copner, K. Tan, “Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission,” IEEE Photon. Technol. Lett. 14(2), 221–223 (2002).
[CrossRef]

K. K. Y. Wong, M. E. Marhic, K. Uesaka, L. G. Kazovsky, “Polarization-independent two-pump fiber optical parametric amplifier,” IEEE Photon. Technol. Lett. 14(7), 911–913 (2002).
[CrossRef]

J. Lightwave Technol.

Opt. Express

Opt. Fiber Technol.

I. Tafur Monroy, R. Kjær, F. Öhman, K. Yvind, P. Jeppesen, “Distributed fiber Raman amplification in long reach PON bidirectional access links,” Opt. Fiber Technol. 14(1), 41–44 (2008).
[CrossRef]

Other

J. D. Marconi, J. M. Chavez Boggio, H. L. Fragnito, and S. R. Bickham, “Nearly 100 nm bandwidth of flat gain with a double-pumped fiber optic parametric amplifier,” in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper OWB1.
[CrossRef]

M. E. Marhic, Fiber Optical Parametric Amplifiers, Oscillators and Related Devices (Cambridge University, 2007).

V. Mizrahi, “Bidirectional WDM optical communication systems with bidirectional optical amplifiers,” Ciena Corp., US Patent 5,742,416 (1998).

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Figures (10)

Fig. 1
Fig. 1

Experimental setup for bidirectional OPA. AWG: arrayed waveguide grating; PRBS: pseudorandom binary sequence; SMF: single-mode fiber; EDFA: erbium-doped fiber amplifier; VOA: variable optical attenuator; ISO: isolator; TLS: tunable laser source; PM: phase modulator; TBPF: tunable bandpass filter; HNLF: highly nonlinear fiber; OSA: optical spectrum analyser; PD: photodetector.

Fig. 2
Fig. 2

Gain spectra for bidirectional and unidirectional OPAs in both directions. D1/D2: direction 1/2; uni: unidirectional OPA; bi: bidirectional OPA.

Fig. 3
Fig. 3

Output optical spectrum from bidirectional OPA in one of the directions.

Fig. 4
Fig. 4

Eye diagrams of selected channels amplified by either unidirectional or bidirectional OPA in direction 1.

Fig. 5
Fig. 5

Bit error rate measurements on selected channels in unidirectional and bidirectional OPAs in (a) direction 1 and (b) direction 2. Ch1/5/10_bi: bidirectional OPA; Ch1/5/10_uni: unidirectional OPA.

Fig. 6
Fig. 6

Receiver sensitivities for all channels in both directions in bidirectional OPA.

Fig. 7
Fig. 7

Gain spectra for bidirectional and unidirectional OPAs in both directions with increased gain. D1/D2: direction 1/2; uni: unidirectional OPA; bi: bidirectional OPA.

Fig. 8
Fig. 8

Output optical spectrum from bidirectional OPA in one of the directions with 16 channels.

Fig. 9
Fig. 9

Bit error rate measurements on selected channels in 15-dB gain unidirectional and bidirectional OPAs in (a) direction 1 and (b) direction 2. Ch1/4/8/12/16_bi: bidirectional OPA; Ch1/4/8/12/16_uni: unidirectional OPA.

Fig. 10
Fig. 10

Receiver sensitivities for all channels in both directions in bidirectional OPA.

Tables (2)

Tables Icon

Table 1 Parameters of unidirectional and bidirectional OPAs in both directions. D1/D2: direction 1/2; uni: unidirectional OPA; bi: bidirectional OPA.

Tables Icon

Table 2 Parameters of unidirectional and bidirectional OPAs in both directions with enhanced gain. D1/D2: direction 1/2; uni: unidirectional OPA; bi: bidirectional OPA.

Metrics