Optical signal selection with a constant gain and a gain bandwidth by a multielectrode distributed feedback laser amplifier

Magari, Katsuaki; Kawaguchi, Hitoshi; Oe, Kunishige; Nakano, Yoshinori; Fukuda, Mitsuo
December 1987
Applied Physics Letters;12/14/1987, Vol. 51 Issue 24, p1974
Academic Journal
Optical demultiplexing characteristics are studied using a multielectrode distributed feedback laser amplifier. The gain maximum frequency is tunable over 20.6 GHz with a constant insertion gain (9.7±1.2 dB) and a constant gain bandwidth (2.9 GHz), without any mode jump, by changing the driving current of the divided two electrodes. A single optical signal can be selected from two optical inputs separated by 15.4 GHz with an extinction ratio of better than -20 dB.


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