SPOT-SIZE CONVERTER INTEGRATED LASER-DIODES (SS-LDS)

A laser diode integrated with a spot-size converter has been developed for low cost optical modules. This device involves a mechanism that m atches its optical field with fiber or planar lightwave circuits (PLC) . This improves the alignment tolerance of the optical coupling and al lows for an easy passive alignment approach. This device was fabricate d on a 2-in substrate using MOVPE for crystal growth, stepper for phot olithography and dry etching for mesa formation, which were all fit fo r mass production. Thus, the cost of the device is reduced. This devic e offers high coupling efficiency with single-mode fibers and high rel iability, so that it can be widely implemented in coming advanced opti cal networks.