Pseudo-Linear Transmission of High-Speed TDM Signals

Essiambre, René-Jean; Raybon, G.; Mikkelsen, B.

doi:10.1016/b978-012395173-1/50006-2

Cited by 86 publications

(47 citation statements)

References 85 publications

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“…Because of the temporal broadening during propagation, the carrier pulse power spreads over many time slots and so the accumulated effect of the instantaneous fiber nonlinearity tends to get averaged out. Signal transmission using very short optical pulses is often referred to as the quasi-linear regime [86][87][88][89]. In this regime, the nonlinear impairments that are allowed to accumulate by the remaining order of the field can impose severe limits to transmission.…”

Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

“…In this regime, the nonlinear impairments that are allowed to accumulate by the remaining order of the field can impose severe limits to transmission. It is widely accepted that intrachannel nonlinear effects are the dominant sources of nonlinear penalties in quasi-linear fiber communication systems using the conventional OOK (or amplitude-shift keying) modulation format at high bit rates: 40 Gb/s or above [86][87][88][89]. Intrachannel FWM is responsible for the growth of so-called ghost pulses in the zero-bit time slots and amplitude fluctuations in the one-bit pulses, while intrachannel cross-phase modulation (XPM) primarily causes timing jitter.…”

Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

“…In conventional transmission lines operated at high bit rates, for both RZ and NRZ formats transmission is limited by the accumulation of nonlinear impairments along the line [87,[106][107][108]. In long-haul transmission systems RZ turns out to be superior compared to RZ [109], in virtue of a higher robustness to nonlinear signal distortion.…”

Section: Data Transmission With Periodic In-line All-optical Format Cmentioning

confidence: 99%

“…Intrachannel FWM is responsible for the growth of so-called ghost pulses in the zero-bit time slots and amplitude fluctuations in the one-bit pulses, while intrachannel cross-phase modulation (XPM) primarily causes timing jitter. For the RZ format, transmission in conventional single-mode fiber (SMF) suffers primarily from intrachannel FWM, while it is limited by intrachannel XPM in the TrueWave-class of fibers [86,87]. Alloptical 2R regeneration that suppresses the buildup of a low-power background and reduces the amplitude jitter of the carrier pulses is a possible technique for improving the performance of such systems [11,12,[30][31][32][33][34][35][36]39].…”

Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

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Nonlinear loop mirror-based all-optical signal processing in fiber-optic communications

Boscolo

Turitsyn

Blow

2008

Optical Fiber Technology

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All-optical data processing is expected to play a major role in future optical communications. The fiber nonlinear optical loop mirror (NOLM) is a valuable tool in optical signal processing applications. This paper presents an overview of our recent advances in developing NOLM-based all-optical processing techniques for application in fiber-optic communications. The use of in-line NOLMs as a general technique for all-optical passive 2R (reamplification, reshaping) regeneration of return-to-zero (RZ) on-off keyed signals in both high-speed, ultralong-distance transmission systems and terrestrial photonic networks is reviewed. In this context, a theoretical model enabling the description of the stable propagation of carrier pulses with periodic all-optical self-regeneration in fiber systems with in-line deployment of nonlinear optical devices is presented. A novel, simple pulse processing scheme using nonlinear broadening in normal dispersion fiber and loop mirror intensity filtering is described, and its employment is demonstrated as an optical decision element at a RZ receiver as well as an in-line device to realize a transmission technique of periodic all-optical RZ-non-return-to-zero-like format conversion. The important issue of phase-preserving regeneration of phase-encoded signals is also addressed by presenting a new design of NOLM based on distributed Raman amplification in the loop fiber.

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Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

Section: Data Transmission With Periodic In-line All-optical Format Cmentioning

confidence: 99%

Section: Ultralong-distance 40-gb/s Transmissionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear loop mirror-based all-optical signal processing in fiber-optic communications

Boscolo

Turitsyn

Blow

2008

Optical Fiber Technology

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“…If desired code rate is set to R 0 = 0.8, and column weight to r = 3, the parameter n = 5r. Example: By setting q = 1129, the set of integers to be used in (6) is obtained as S={0, 1,4,11,27,39,48,84,134,163,223, 284,333,397,927}. The corresponding LDPC code has rate R 0 = 1 − 3/15 = 0.8, column weight 3, girth-10 and length nq = 15· 1129 = 16935, which is about twice shorter than turbo-product code (TPC) proposed in [25].…”

Section: Large Girth Ldpc Codesmentioning

confidence: 99%

Mitigation of linear and nonlinear impairments in high-speed optical networks by using LDPC-coded turbo equalization

Djordjević

2008

2008 Digest of the IEEE/LEOS Summer Topical Meetings

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Abstract-We study a turbo equalization scheme based on low-density parity-check (LDPC) coded turbo equalization (TE). This scheme is suitable for simultaneous: (i) suppression of intrachannel nonlinearities, (ii) chromatic dispersion compensation, and (iii) polarization-mode dispersion (PMD) compensation. LDPC coding is based on large girth (g ≥ 8) block-circulant codes, and maximum a posteriori probability (MAP) equalizer is based on Bahl-Cocke-Jelinek-Raviv (BJCR) algorithm. The ultimate channel capacity limits, assuming an independent identically distributed (i.i.d.) source are reported as well. In the presence of intrachannel nonlinearities the LDPC-coded TE provides almost 12 dB improvement over BCJR equalizer at BER of 10 −8 . For an NRZ system operating at 10 Gb/s with residual dispersion of 11200 ps/nm and for differential group delay of 50 ps, the LDPC-coded TE is only 1 dB away from the i.i.d channel capacity. The efficiency of LDPC-coded TE in PMD compensation is demonstrated experimentally, with decoding performed off line.

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Optical Transmitters, Receivers, and Noise

Winzer¹

2003

Wiley Encyclopedia of Telecommunications

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This article is designed to open up the field of optical modulation and reception on an introductory level by discussing a selection of optical modulation techniques currently viewed as being most promising. Further, high‐performance optical receiver structures and their noise properties are outlined, both for the fiber channel and for the free‐space channel. Basic receiver design rules as well as important performance trade‐offs are extracted. Frequently used concepts for quantifying receiver performance, such as receiver sensitivity, quantum limit, Q‐factor, and optical signal‐to‐noise ratio (OSNR) are explained.

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Pseudo-Linear Transmission of High-Speed TDM Signals

Cited by 86 publications

References 85 publications

Nonlinear loop mirror-based all-optical signal processing in fiber-optic communications

Nonlinear loop mirror-based all-optical signal processing in fiber-optic communications

Mitigation of linear and nonlinear impairments in high-speed optical networks by using LDPC-coded turbo equalization

Optical Transmitters, Receivers, and Noise

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