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Polarization insensitive frequency converter with the capability of chirp removal

: Eiselt, M.; Schnabel, R.; Dietrich, E.


IEEE Photonics Technology Letters 10 (1998), No.1, pp.63-5
ISSN: 1041-1135
Journal Article
Fraunhofer HHI ()
chirp modulation; light polarisation; multiwave mixing; optical communication equipment; optical frequency conversion; optical modulation; phase modulation; semiconductor lasers; wavelength division multiplexing; polarization insensitive frequency converter; chirp removal; four-wave mixing; semiconductor optical amplifier; input signal; spectrally duplicated; mach-zehnder type phase modulator; two waves; frequency converted output signal; additional pump wave; converted output wavelength; fwm process bit-error-rate measurements; converted signal; standard communication fiber

We report on a new type of polarization insensitive frequency conversion technique using four-wave mixing (FWM) in a semiconductor optical amplifier (SOA). In this technique the input signal is spectrally duplicated by a Mach-Zehnder type phase modulator. Then, the resulting two waves generate the frequency converted output signal by FWM with use of an additional pump wave. The converted output wavelength is independent of the wavelength of the input signal. In addition to the frequency conversion, the chirp of the input signal is removed by the FWM process bit-error-rate (BER)-measurements after transmission of the converted signal over standard communication fiber are reported.