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DISTRIBUTED BRAGG REFLECTOR SEMICONDUCTOR LASER DIODE, INTEGRATED SEMICONDUCTOR LASER, SEMICONDUCTOR LASER MODULE, AND OPTICAL NETWORK SYSTEM
DISTRIBUTED BRAGG REFLECTOR SEMICONDUCTOR LASER DIODE, INTEGRATED SEMICONDUCTOR LASER, SEMICONDUCTOR LASER MODULE, AND OPTICAL NETWORK SYSTEM
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机译:分布式布拉格反射器半导体激光器二极管,集成半导体激光器,半导体激光器模块和光学网络系统
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摘要
PROBLEM TO BE SOLVED: To provide a semiconductor laser having a wide tuning range, in which both mode stability and high optical output are satisfied.;SOLUTION: The distributed Bragg reflector semiconductor laser diode (DBR-LD) comprises a gain region 3, a phase region 2 and a DBR1, wherein the DBR1 and the phase region 2 are single transverse mode waveguides and the gain region 3 consists of a single transverse mode waveguide 3a and a multi-mode interference waveguide 3b. In the MMI waveguide 3b, a light, entering the single transverse mode waveguide 3a, is delivered to a single transverse mode waveguide 3a at the other end with an extremely low loss, because of the interference effect. When the MMI waveguide 3b is introduced to the gain region 3 of a uniaxial mode light source, i.e. the DBR-LD, length of the gain region 3 can be shortened, without lowering the optical output, and mode stability is enhanced.;COPYRIGHT: (C)2004,JPO
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