Four-channel WDM optical phase conjugator usingfour-wavemixing in a single semiconductor optical amplifier

Lacey, J.P.R.; Madden, Steve; Summerfield, M.A.; Tucker, R.S.; Faris, A.I.

doi:10.1049/el:19950513

Cited by 25 publications

(14 citation statements)

References 4 publications

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“…Modulating a high percentage of the input power to the SOA can induce modulation of the SOA gain and cause ISI. To date, most reported experiments have simply maintained a large P/Q ratio and mentioned the possibility of this problem [14], [18]. In this section, we investigate the effect of P/Q ratio on the performance of the wavelength converter.…”

Section: Pump-to-probe Ratiomentioning

confidence: 99%

Wavelength conversion for WDM communication systems using four-wave mixing in semiconductor optical amplifiers

Geraghty

Lee

Verdiell

et al. 1997

IEEE J. Select. Topics Quantum Electron.

108

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Abstract-Four-wave mixing (FWM) in semiconductor optical amplifiers is an attractive mechanism for wavelength conversion in wavelength-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges. A series of systems experiments evaluating several aspects of the performance of these devices at bit rates of 2.5 and 10 Gb/s are presented. Included are single-channel conversion over 18 nm of shift at 10 Gb/s, multichannel conversion, and cascaded conversions. In addition time resolved spectral analysis of wavelength conversion is presented.

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Section: Pump-to-probe Ratiomentioning

confidence: 99%

Wavelength conversion for WDM communication systems using four-wave mixing in semiconductor optical amplifiers

Geraghty

Lee

Verdiell

et al. 1997

IEEE J. Select. Topics Quantum Electron.

108

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“…We have previously demonstrated the use of FWM in a single SOA to perform simultaneous spectral inversion of four 2.5-Gb/s WDM channels [40]. The application of this technique is in long-distance transmission, where mid-span spectral inversion can be used to overcome the detrimental effects of chromatic dispersion, FWM, and self-phase modulation in the transmission fiber.…”

Section: Simultaneous Spectral Inversion Of Multiple Signalsmentioning

confidence: 99%

Frequency-domain model of multiwave mixing in bulk semiconductor optical amplifiers

Summerfield

Tucker

1999

IEEE J. Select. Topics Quantum Electron.

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We present a new steady-state frequency-domain model of highly nondegenerate four-wave mixing in bulk semiconductor optical amplifiers (SOA's). The model can handle a large number of interacting optical fields and situations in which the nonlinear interactions are complex. It accounts for the longitudinal dependence of the population inversion in the SOA and the spectral dependence of the gain. Carrier population pulsations, spectral-hole burning, and carrier heating, which dominate the nonlinear response over bandwidths into the terahertz range, are included. The model also includes output amplified spontaneous emission noise and allows important system parameters such as signal-to-noise ratio and noise figure to be estimated. A number of applications of the model are presented in which good agreement between theoretical and experimental results is demonstrated.Index Terms-Four-wave mixing, optical frequency conversion, semiconductor device modeling, semiconductor optical amplifiers, wavelength division multiplexing.

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“…The noise at the conjugate wavelength is usually dominated by the amplified spontaneous emission (ASE) noise from the pump and signal. The reduction of this noise has been demonstrated in an SOA based conjugator (i) by bandpass filtering of the pump and/or signal waves before mixing [6], [7] and (ii) by the insertion of a notch filter at the conjugate wavelength before the conjugator [8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of DSF- and SOA-based phase conjugators by incorporating noise-suppressing fiber gratings

Set

Geiger

Laming

et al. 1997

IEEE J. Quantum Electron.

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We compare the performance of dispersion-shifted-fibre (DSF) and semiconductor-opticalamplifier (SOA) based phase conjugators for a 10 Gb/s non-return-to-zero system with respect to conversion efficiency, noise figure and distortion. Fibre gratings are used for signal extraction and amplified spontaneous emission (ASE) suppression, allowing closer wavelength spacing and reducing the conjugation noise figure by up to 12 dB. Despite the higher SOA conversion efficiency, both conjugators give similar noise figures with ASE suppression. However, the DSF based conjugator has the advantage of distortion tolerance at higher input power.2

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Four-channel WDM optical phase conjugator usingfour-wavemixing in a single semiconductor optical amplifier

Cited by 25 publications

References 4 publications

Wavelength conversion for WDM communication systems using four-wave mixing in semiconductor optical amplifiers

Wavelength conversion for WDM communication systems using four-wave mixing in semiconductor optical amplifiers

Frequency-domain model of multiwave mixing in bulk semiconductor optical amplifiers

Optimization of DSF- and SOA-based phase conjugators by incorporating noise-suppressing fiber gratings

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