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	Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning
	TABUCHI, HARUHIKO, C/O FUJITSU LIMITED
	1992-12-23
著作权人	FUJITSU LIMITED
专利号	EP0516044A3
国家	欧洲专利局
文献子类	发明申请
其他题名	Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning
英文摘要	A tunable laser diode comprises a first reflector (200a), a second reflector (200b), an optical cavity (31- 34) extending between the first reflector and the second reflector for establishing an optical resonance by transmitting an optical beam therethrough, and a gain region (31, 32) for amplifying the optical beam. The optical cavity comprises a first waveguide part (31) connected to the first reflector and extending toward the second reflector, a second waveguide part (32) connected to the second reflector and extending toward the first reflector, a third waveguide part (33) connecting the first waveguide part and the second waveguide part with each other for passing a first optical beam between the first and second reflectors, and a fourth waveguide part (34) connecting the first waveguide part and the second waveguide part for passing a second optical beam between the first and second reflectors, wherein the first waveguide part, the second waveguide part and the third waveguide part form a first optical path having a first optical path length while the first waveguide part, the second waveguide part and the fourth waveguide part form a second optical path having a second optical path length that is different from said first optical path length. In correspondence to the third and fourth waveguide parts, a refractive index modulator (251, 252, 63, 64) is provided for changing a refractive index of the third waveguide part and the fourth waveguide part relatively with each other.
公开日期	1992-12-23
申请日期	1992-05-26
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/89194]
专题	半导体激光器专利数据库
作者单位	FUJITSU LIMITED
推荐引用方式 GB/T 7714	TABUCHI, HARUHIKO, C/O FUJITSU LIMITED. Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning. EP0516044A3. 1992-12-23.

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