High-performance all-active tapered 1550 nm InGaAsP-BH-FP lasers

Large spot-size InGaAsP-BH-FP laser diodes using all-active tapered stripes have been investigated. Optimized 400 /spl mu/m long as-cleaved lasers show front facet CW output powers of more than 40 mW at 200 mA operation current, good high temperature behavior and a minimum coupling loss of -3.5 dB to a cleaved single-mode fiber.