Semiconductor distributed-feedback laser device

Details Semiconductor distributed-feedback laser device Semiconductor distributed-feedback laser device

H - Electricity

01

S

H01S 5/12 (2006.01) H01S 3/06 (2006.01) H01S 5/223 (2006.01) H01S 3/025 (1990.01)

Patent

CA 2083188

ABSTRACT OF THE DISCLOSURE A gain-coupled distributed feedback semiconductor laser device includes regions disposed with a predetermined period in an active layer or a cladding layer on the active layer in such a manner that perturbation in distribution of carriers injected into the active layer may be produced, which results in perturbation in gain coefficient without increasing internal loss, whereby single-longitudinal-mode oscillation facilitating gain coupling is available.

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