摘要:
A semiconductor laser module which makes an optical fiber (8) couple two laser beams emitted from a semiconductor device (2) by orthogonal polarization combination. The optical fiber (8) is a polarization reserve fiber and so positioned that two orthogonal main axes of the polarization reserve fiber and the two beams may make angles of about 45∘in their respective polarization directions.
摘要:
A semiconductor laser device having two active layer stripe structures. A cross section of one of the stripe structures includes an n-InP substrate (1), n-InP clad layer (2), a lower GRIN-SCH layer (3b), an active layer (4b), an upper GRIN-SCH layer (5b), a p-InP clad layer (6), and a p-InGaAsP contact layer (7) formed in this order. Moreover, a high reflection film (12) is arranged at the reflection side end surface and a low reflection film (13) is arranged at the emission side end surface. On the p-InGaAsP contact layer (7), a p-side electrode (8b) is arranged partly and a non-current poured region (14) is formed at the remaining area.