Optical PSK Transmission Experiment At 565Mbit/S Incorporating An Endless Polarisation Control System

Steele, R.C.; Creaner, M.J.; Walker, Gordon J.; Walker, N.G.

doi:10.1117/12.959768

Cited by 9 publications

(2 citation statements)

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“…[7]. Their conclusions show that due to the finite bandwidth of the loop amplifier reducing the phase margin of the system, it is preferable to use a modified first order loop when using lasers with linewidths greater than tens of kHz.…”

Section: Opll With Lag Filtermentioning

confidence: 95%

<title>Novel approach to optical frequency synthesis in coherent lightwave systems</title>

Fernando¹,

Fake²,

Seeds

1991

Coherent Lightwave Communications: Fifth in a Series

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This paper proposes and analyses a novel technique to generate a set of optical carriers from an optical reference comb of frequencies. This is achieved by using an optical phase or frequency locked loop as an optical frequency synthesiser. Theoretical models and practical results are presented. The implementation of such a technique is described in the context of an VFDM photonic MAN currently under development. The paper concludes with the merits of both loop designs being considered and contrasted.

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Section: Opll With Lag Filtermentioning

confidence: 95%

<title>Novel approach to optical frequency synthesis in coherent lightwave systems</title>

Fernando¹,

Fake²,

Seeds

1991

Coherent Lightwave Communications: Fifth in a Series

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show abstract

“…Power spectral density of the phase error Some carrier synchronizers for optical BPSK heterodyne systems, such as the decision-directed PLL and the Costas loop have already been analysed.45 However in both these schemes the time delay through the baseband filter, within the feedback loop, limits the tracking speed of the PLL. 6 The squaring loop carrier synchronizer, shown in Fig. 1, avoids this problem.…”

Section: Squaring Loop Carrier Synchronizer Analysismentioning

confidence: 97%

<title>Carrier recovery and filtering in optical BPSK systems using external cavity semiconductor lasers</title>

Pires

daRocha

1991

Coherent Lightwave Communications: Fifth in a Series

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An optical binary phase-shift keying (BPSK) heterodyne receiver using synchronous demodulation by means of a squaring loop carrier synchronizer is analysed.A detailed modelling of the phase error is performed taking into account the influence of additive noise and non-Lorentzian laser phase noise from external cavity semiconductor lasers.The effect of filtering on the baseband signal is also examined. It is found that the filter decreases the impact of laser phase noise, namely by reducing the degradation due to relaxation oscillations.

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

Ramos

Seeds

1990

Electron. Lett. (UK)

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Optical PSK Transmission Experiment At 565Mbit/S Incorporating An Endless Polarisation Control System

Cited by 9 publications

References 0 publications

<title>Novel approach to optical frequency synthesis in coherent lightwave systems</title>

<title>Novel approach to optical frequency synthesis in coherent lightwave systems</title>

<title>Carrier recovery and filtering in optical BPSK systems using external cavity semiconductor lasers</title>

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

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