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Hiroshi FUKUI Yasuharu SUEMATSU Kazuhito FURUYA Yuichi TOHMORI Sigehisa ARAI
It was shown experimentally that the noise, which is estimated to be due to mode hopping among modes composed of a laser mirror and an external reflection point, was suppressed in distributed-Bragg-reflector(DBR) single mode lasers biased above a certain level. This tendency agree with our theoretical prediction.