Semiconductor laser homodyne optical phase-locked-loop

Malyon, D.J.; Smith, David W.; Wyatt, R.

doi:10.1049/el:19860287

Cited by 32 publications

(7 citation statements)

References 2 publications

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“…The described phase detector is employed for the demonstration of our locking techniques based on sub-carrier modulation, presented in the following sections. The best linear OPLL is the balanced OPLL, which were originally proposed in [5], and later used in many homodyne detection experiments [6][7][8][9]. It includes two photodiodes that are interconnected so that, the signal difference between their photocurrents, drives the following transimpedance amplifier (TIA).…”

Section: Phase-locking Techniquesmentioning

confidence: 99%

“…Also in this case, such first control was too slow to follow fast frequency changes and an additional frequency control mechanism based on an acousto-optic modulator was implemented. * An external cavity semiconductor laser (ECL) was used as LO in [7]; a LiNbO3 phase modulator was placed inside the cavity in order to obtain frequency modulation. First homodyne detection using ECLs was reported in [20] where frequency modulation is obtained by directly driving the two-electrode chip, corresponding to the anode and the cathode of the ECL laser.…”

Section: Phase-locking Techniquesmentioning

confidence: 99%

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Optical Phase Locking techniques: an overview and a novel method based on Single Side Sub-Carrier modulation

Ferrero¹,

Camatel²

2008

Opt. Express

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A short overview on Optical Phase locking techniques and a detailed description of the Phase Locking technique based on Sub-Carriers modulation is presented. Furthermore, a novel Single Side Sub-Carrier-based Optical Phase Locked Loop (SS-SC-OPLL), with off the shelf optical components, is also presented and experimentally demonstrated. Our new method, based on continuous wave semiconductor lasers and optical single side sub-carrier modulation using QPSK LiNbO(3) modulator, allows a practical implementation with better performance with respect to the previously proposed OPLL circuits, and permits an easy use in real time WDM signal coherent demodulation.

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Section: Phase-locking Techniquesmentioning

confidence: 99%

Section: Phase-locking Techniquesmentioning

confidence: 99%

Optical Phase Locking techniques: an overview and a novel method based on Single Side Sub-Carrier modulation

Ferrero¹,

Camatel²

2008

Opt. Express

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“…is the OPLL closed-loop transfer function and it is given by (2) where is the open-loop OPLL total gain (see [17]) and is the loop propagation delay. and are the phase detector gain factor and the optical VCO sensitivity, respectively [see Fig.…”

Section: B Theoretical Analysismentioning

confidence: 99%

“…Due to the limited piezoelectric transducer time response, they presented some problems to lock the RX signal frequency. Some experiments have been performed by external cavity semiconductor lasers (ECL) with a phase modulator inside the cavity, in this case, frequency modulation was obtained by directly driving the two-electrode chip [2]. The use of an acousto-optic modulator was also proposed in order to tune the frequency of a CW HeNe gas laser [3].…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis and Experimental Testing of BPSK Homodyne Receivers Based on Subcarrier Optical Phase-Locked Loop

Camatel

Ferrero

2008

J. Lightwave Technol.

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The analysis of a subcarrier optical phase-locked loop (SC-OPLL) is carried out in order to optimize phase-locking performance. A new parameters optimization procedure, useful for OPLL design, is demonstrated theoretically and experimentally. An SC-OPLL based on this procedure has been realized, so a pilot carrier SC-OPLL and a nonlinear SC-OPLL optical receiver have been experimentally constructed and tested. An 8B/10B line coding is employed for pilot carrier SC-OPLL receiver in order to improve performance and a new architecture of decision-driven PLL is experimentally demonstrated.

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“…On the other hand, heterodyne receivers offer four important advantages: (a) local oscillator (LO) laser relative intensity noise (RIN) rejection 1 ; (b) simpler implementation (since most of the laser relative intensity noise is rejected by the IF bandpass amplifier, heterodyne systems do not necessarily need balanced receivers); (c) relaxed laser linewidth requirements: PSK synchronous heterodyne systems require a linewidth of about 2 · 10" 3 χ bit rate [2] versus 10~6 χ bit rate for homodyne systems [3]; and (d) a possibility to equalize the fiber chromatic dispersion using microwave equalizers [4]. Laser linewidth requirements for PSK synchronous receivers can be met today by external cavity lasers [5,6], He-Ne gas lasers [7,8] or solidstate miniature Nd:YAG lasers [9][10][11][12][13]. Miniature Nd:YAG lasers are particularly attractive: they are 2 Synchronous receiver structure…”

Section: Introductionmentioning

confidence: 99%

Optical PSK Synchronous Heterodyne Experiments at 560 Mbit/s through 4 Gbit/s

Atlas¹,

Kazovsky²

1991

Journal of Optical Communications

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A synchronous optical heterodyne receiver was constructed using an optical phase-locked loop based on a 1320nm diode-pumped Nd:YAG laser. Using that receiver and a transmitter based on another Nd: YAG laser, PSK synchronous heterodyne experiments were demonstrated at 560 Mbit/s, 2 Gbit/s and 4 Gbit/s. The receiver sensitivity at the three bit rates was -48.7 dBm (159 photons/bit), -41.7 dBm (225 photons/bit), and -34.2 dBm (631 photons/bit), resepctively. Performance degradations due to an insufficient local iscillator power, a finite intermediate frequency (IF) and a sub-optimum coupler splitting ratio were investigated. compact, robust and can generate highly coherent 1320 nm radiation with linewidths of the order of 1 Hz [13].Recently, optical PSK synchronous heterodyne experiments at 560 Mbit/s have been reported by several groups [14][15][16][17]. In this paper, we demonstrate a synchronous heterodyne receiver using an optical phaselocked loop and report experimental results at bit rates of 560 Mbit/s [17], 2 Gbit/s [18] and 4 Gbit/s [19]. To achieve the higher bit rates (2 Gbit/s and 4 Gbit/s), we use a simple broadband receiver (p-i-n/100-Ω photodetector). In addition, we investigate the impact of the finite IF, the coupler splitting ratio (for the single-ended receiver with the available LO power of 3.3 dBm) and the insufficient LO power on the system performance.

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Semiconductor laser homodyne optical phase-locked-loop

Cited by 32 publications

References 2 publications

Optical Phase Locking techniques: an overview and a novel method based on Single Side Sub-Carrier modulation

Optical Phase Locking techniques: an overview and a novel method based on Single Side Sub-Carrier modulation

Design, Analysis and Experimental Testing of BPSK Homodyne Receivers Based on Subcarrier Optical Phase-Locked Loop

Optical PSK Synchronous Heterodyne Experiments at 560 Mbit/s through 4 Gbit/s

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