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Frequency conversion by four-wave-mixing in LD amplifiers


Tada, K.:
Photonic Switching II. Proceedings of the International Topical Meeting : Kobe, Japan, April 12 - 14, 1990
Berlin: Springer, 1990 (Springer series in electronics and photonics 29)
ISBN: 3-540-53067-3
ISBN: 0-387-53067-3
International Topical Meeting on Photonic Switching <2, 1990, Kobe>
Fraunhofer HHI ()
multiwave mixing; optical communication equipment; optical frequency conversion; semiconductor junction lasers; laser diodes; four-wave-mixing; ld amplifiers; traveling wave laser diode amplifiers; all-optical frequency conversion; optical data signal; gain bandwidth; conversion efficiency; internal gain; data signals; angle modulation schemes; 400 GHz; 1 Gbit/s

Nearly-degenerate four-wave-mixing in traveling wave laser diode amplifiers enables all-optical frequency conversion of an optical data signal. The frequency conversion range is limited by the gain bandwidth of the amplifier, which is about 4000 GHz in the experimental and theoretical work reported here. In general, the conversion efficiency is larger than one due to the internal gain of the amplifier. Moreover, an optical data signal can be converted simultaneously to several (>or=10) different frequencies with use of one semiconductor laser amplifier only. The frequency converter operates for data signals up to 1 Gbit/s independently of modulation scheme and bit rate. It can preferably be applied to angle modulation schemes.