Error correcting coding of a 220 Mbit/s coherent optical communication channel

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Error correcting coding of a 220 Mbit/s coherent optical communication channel

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© The Institution of Electrical Engineers
Published

Coherent optical communication systems that employ semiconductor lasers have exhibited degraded performance caused by laser phase noise. A rate 1/2, constraint length of seven, convolutional code with hard decision, Viterbi decoding has been applied to an experimental 220 Mbit/s optical FSK channel. Code testing has demonstrated the ability to improve system efficiency and significantly reduce the effect of laser linewidth on bit error rate performance, verifying prior theoretical work.

Inspec keywords: error correction codes; optical communication; frequency shift keying

Other keywords: 220 Mbit/s; convolutional code; error correcting code; Viterbi decoding; coherent optical communication channel; bit error rate performance; semiconductor lasers; degraded performance; laser phase noise; optical FSK channel

Subjects: Codes; Optical communication

References

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      • A.J. Viterbi , J.K. Omura . (1979) Principles of communication and coding.
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      • G.J. Foschini , L.J. Greenstein , G. Vannucci . Noncoherent detection of coherent lightwave signal corrupted by phase noise. IEEE Trans. , 3 , 306 - 314
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      • Qualcomm Staff: ‘Q1401 K=7 rate-1/2 single chip Viterbi decoder: Technical data sheet’ Qualcomm Corp., San Diego, USA.
    4. 4)
      • J. Wu , C. Wang , I. Wu . Coding to relax laser linewidth requirements and improve receiver sensitivity for coherent optical BPSK communications. IEEE J. Lightwave Technol. , 4 , 545 - 553
    5. 5)
      • L.L. Jeromin , V.W.S. Chan . M-ary FSK performance for coherent optical communication systems using semiconductor lasers. IEEE Trans. , 4
    6. 6)
      • Colagiuri, E.P., Alexander, S.B., Chan, V.W.S.: `Coding for the coherent optical channel', paper TU16, Technical Digest Optical Fiber Commun. Conf., 1989, Houston.
    7. 7)
      • Alexander, S.B., Barry, R., Castagnozzi, D.M., Chan, V.W.S., Hodsdon, D.M., Jeromin, L.L., Kaufman, J.E., Materna, D.M., Parr, R.J., Stevens, M.L., White, D.W.: `Demonstration of a 4-ary FSK coherent optical communication system', paper FD2, Tech. Digest Optical Fiber Commun. Conf., 1990, San Francisco.
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