Abstract
Recently, laser diodes used in optical network systems must have not only a large alignment tolerance to optical fiber and waveguides to reduce module alignment cost, but also a low threshold current and high temperature operation. The spot-size converted laser diodes (SSC-LDs) are attractive for their large tolerance and low-loss coupling without lenses [1]-[11], and we have demonstrated SSC-LDs with butt-joint -selective (BJ-selective) growth. This structure is very advantageous because it enable us to optimize both laser and SSC regions independently [5-6].
© 1996 Optical Society of America
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