This article demonstrates the application of highly efficient Fabry-Perot lasers to intra-office STM-16 fiber communication systems at the wavelength of 1.3 mum. Low power penalty of 0.05dB through a 12ps/nm fiber was measured at 25 degreesC and 85 degreesC. A low coupling loss of 1dB of a laser to a cleaved SMF fiber is achieved. This device consists of an active stripe followed by a passive intracavity spot size converter. Subsequently, this paper demonstrates the feasibility of non-perturbing intracavity tapers through the application of selective area growth and their applicability to short haul optical systems.

We present recent developments on the fabrication process of Buried Ridge Stripe (BRS) Laser Diodes (LDs) integrated with a butt-coupled passive Spot Size Converter (SSC). Hydrogenation of the buried passive section has been successfully implemented on a 2-inch wafer technology. Hydrogenated SSC-BRS LDs exhibit excellent high temperature CW performances. Improvement of external efficiency (0.24 and 0.16 W/A respectively measured at 85 degrees C on hydrogenated and as-grown 500 mu m-long SSC devices) confirms that hydrogenation significantly reduces the free carrier optical absorption losses. Moreover, its long-term stability is demonstrated through 2000 hrs Automatic Power Control test.