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Open AccessJournal ArticleDOI

Effective homodyne optical phase locking to PSK signal by means of 8b10b line coding

TLDR
A novel technique is demonstrated that allows effective homodyne optical phase locking to a phase shift keying (PSK) signal with a residual carrier, with no penalty compared to back-to-back at a bit error ratio of 10(-3).
Abstract
We demonstrate a novel technique that allows effective homodyne optical phase locking to a phase shift keying (PSK) signal with a residual carrier. We exploit 8b10b coding of the signal in order to reduce its low frequency spectral content, suppressing the data-to-phase crosstalk effect. In a transmission experiment on a 10 Gb/s binary PSK signal (8 Gb/s before coding), we achieved transmission over 215 km of dispersion-compensated, installed single-mode fibre, with no penalty compared to back-to-back at a bit error ratio of 10−3. The proposed solution is applicable to other modulation formats, including multi-level amplitude and/or phase modulation formats.

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Citations
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Journal ArticleDOI

Optical Injection Locking: From Principle to Applications

TL;DR: This paper reviews optical injection locking of semiconductor lasers and its application in optical communications and signal processing with a focus on new developments in the past decade, under the categories of ‘High Speed Directly Modulated Lasers’ and ‘Optical Carrier Recovery’.
Journal ArticleDOI

Homodyne OFDM with Optical Injection Locking for Carrier Recovery

TL;DR: In this article, the authors used optical injection locking (OIL) in conjunction with carrier tone-assisted OFDM to achieve all-optical-carrier-recovered homodyne.
Journal ArticleDOI

Homodyne Coherent Optical Receiver Using an Optical Injection Phase-Lock Loop

TL;DR: In this paper, a synchronous homodyne coherent optical receiver based on an optical phase-locking scheme that combines optical injection locking of the semiconductor laser local oscillator (LO) with low-speed electronic feedback to give both a large locking bandwidth and a wide tracking range is presented.
Journal ArticleDOI

28 Gb/s direct modulation heterogeneously integrated C-band InP/SOI DFB laser

TL;DR: This work demonstrates direct modulation of a heterogeneously integrated C-band DFB laser on SOI at 28 Gb/s with a 2 dB extinction ratio, which is the highest direct modulation bitrate so far reported for a membrane laser coupled to an SOI waveguide.
Journal ArticleDOI

High Speed Direct Modulation of a Heterogeneously Integrated InP/SOI DFB Laser

TL;DR: In this paper, the authors demonstrate a 28 Gb/s pseudo-random bit sequence non-return-to-zero data transmission over 2 km non-zero dispersion shifted fiber with a 1dB power penalty.
References
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Journal ArticleDOI

Coherent detection in optical fiber systems

TL;DR: This work reviews detection methods, including noncoherent, differentially coherent, and coherent detection, as well as a hybrid method, and compares modulation methods encoding information in various degrees of freedom (DOF).
Proceedings Article

Gigabit Ethernet

Rich Seifert
TL;DR: This course takes an in-depth technical look at how these technologies may be applied to solve network growth problems, both today and in the future.
Journal ArticleDOI

Delay, linewidth and bandwidth limitations in optical phase-locked loop design

TL;DR: In this paper, the maximum laser linewidth and loop gain in an optical phase-locked loop (OPLL) are calculated as a function of loop delay and filter bandwidth, using a cycle-slipping criterion.
Proceedings ArticleDOI

Frequency-Selective Homodyne Coherent Receiver with an Optical Injection Phase Lock Loop

TL;DR: The first homodyne coherent receiver with optical injection phase lock loop is reported, achieving phase-error variance of 5x10-3-3rad (1.5MHz linewidth) with 10Gb/s ASK data demodulated with BER.
Proceedings ArticleDOI

Homodyne coherent receiver with phase locking to orthogonal-polarisation pilot carrier by optical injection phase lock loop

TL;DR: In this article, phase locking to an orthogonal-polarisation pilot by an optical injection phase lock loop was demonstrated, enabling homodyne demodulation of 10Gb/s BPSK with performance close to the LO-ASE limit (OSNR=6dB/0.1nm; BER=10−3).
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