Semiconductor laser for coherent beam transmission

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	Semiconductor laser for coherent beam transmission
其他题名	Semiconductor laser for coherent beam transmission
	CHIKAMA TERUMI; KUWABARA HIDEO
	1984-12-20
专利权人	FUJITSU KK
公开日期	1984-12-20
授权国家	日本
专利类型	发明申请
摘要	PURPOSE:To effectively stabilize the frequencies of a local oscillator and a transmitter in an optical communication system, wherein a part of the output of a reference oscillator for transmission in a coherent beam communication is used as the local oscillator of a light-receiving part, by a method wherein the transmitter and a receiver, both for coherent beam transmission, are constituted monolithically. CONSTITUTION:A groove 12 is bored in the surface of a substrate 1 in almost a rectangle form and the surface is divided into two. An optical waveguide path 8 for reception light, which has a diffraction latice 10 for synthesizing in the middle thereof and a photoreceptor 11 at the terminal thereof, is formed in the surface of one side of the substrate 1, facing to the incident light. Moreover, an optical direction 4, which has a distribution feedback type semiconductor laser 3, a diffraction lattice 6 for feedback, a diffraction lattice 7 for branching, a similar semiconductor laser 2 and a diffraction lattice 5 for feedback, is provided from the groove 12 side in parallel to the optical waveguide path 8, and light is emitted from the lattice 5 side. In this constitution, the lattices 10 and 7 are kept having been mutually connected by an optical waveguide path 9 for branching light, and a photoreceptors 14 are arranged across the groove 12 through an optical waveguide path 13, opposing to each other on the laser 3. Frequencies, which generate in such a way, are efficiently stabilized.
其他摘要	目的：为了有效地稳定光通信系统中本地振荡器和发射机的频率，其中用于相干波束通信中传输的参考振荡器的一部分输出被用作光接收部分的本地振荡器，通过一种方法，其中用于相干光束传输的发射器和接收器是单片构成的。组成：凹槽12以几乎矩形的形式钻在基板1的表面上，并且表面被分成两部分。用于接收光的光波导路径8形成在其一侧的表面中，该光波导路径8具有用于在其中间合成的衍射片10和在其末端处的感光器11。基板1，面向入射光。此外，从凹槽12提供光学方向4，其具有分布反馈型半导体激光器3，用于反馈的衍射晶格6，用于分支的衍射晶格7，类似的半导体激光器2和用于反馈的衍射晶格5。在与光波导路径8平行的一侧，光从格子5侧射出。在这种结构中，格子10和7通过用于分支光的光波导路径9保持相互连接，并且光感受器14通过光波导路径13横跨凹槽12布置，在激光器3上彼此相对。以这种方式产生的频率是有效的稳定。
主权项	-
申请日期	1983-06-08
专利号	JP1984227180A
专利状态	失效
申请号	JP1983100961
公开（公告）号	JP1984227180A
IPC 分类号	G02B6/122 \| H01L27/15 \| H01S5/00 \| H01S5/026 \| H01S3/18 \| G02B5/174
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/67737
专题	半导体激光器专利数据库
作者单位	FUJITSU KK
推荐引用方式 GB/T 7714	CHIKAMA TERUMI,KUWABARA HIDEO. Semiconductor laser for coherent beam transmission. JP1984227180A[P]. 1984-12-20.

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