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Signal quality and BER performance improvement by wavelength conversion with an integrated three-port Mach-Zehnder interferometer

Signal quality and BER performance improvement by wavelength conversion with an integrated three-port Mach-Zehnder interferometer

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Published

2.5 Gbit/s all-optical wavelength conversion is reported with a novel monolithically integrated Mach-Zehnder interferometer realised in InGaAsP/InP MQW technology. The three-port MZI wavelength converter enables strong improvement of extinction ratios up to 11 dB in dynamic operation and signal chirp reduction by optical crossphase modulation. This improvement of signal quality by wavelength conversion is confirmed by a gain of 2.3 dB in system sensitivity after transmission over 100 km (nondispersion-shifted) fibre compared to the standard 2.5 Gbit/s direct modulation performance of a DFB laser.

Inspec keywords: indium compounds; Mach-Zehnder interferometers; optical receivers; semiconductor quantum wells; gallium arsenide; integrated optics; III-V semiconductors; optical frequency conversion

Other keywords: all-optical wavelength conversion; signal quality; InGaAsP-InP; MQW technology; optical crossphase modulation; dynamic operation; extinction ratios; 2.3 dB; BER performance; 100 km; MZI wavelength converter; integrated three-port Mach-Zehnder interferometer; signal chirp reduction; 2.5 Gbit/s; nondispersion-shifted fibre

Subjects: Optical communication devices, equipment and systems; Nonlinear optics and devices; Optical harmonic generation, frequency conversion, parametric oscillation and amplification; Optical communication; Integrated optics; Optical interferometry; Integrated optics

References

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