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	Tuneable Laser
	NICKOLAY, ZAKHLENIUK; ANTHONY, JAMES, HOLDEN
	2003-11-19
著作权人	BOOKHAM TECHNOLOGY PLC
专利号	GB2388708A
国家	英国
文献子类	发明申请
其他题名	Tuneable Laser
英文摘要	A tuneable laser including a light creating section to generate light 1 and a tuneable section 3, which may be a distributed bragg reflector (DBR) formed of a semiconductor material which utilises the electro-optic effect to achieve a change in the refractive index of the material, W n, under the influence of an applied field, F, in accordance with the equation W n=- n0<3>[rF+sFé] I W nL+ W nQ where n0 is the refractive index at zero field and W nL and W nQ are the linear and quadratic contributions to the change in refractive index respectively, r is the linear electro-optic coefficient of the material and s is the quadratic electro-optic coefficient of the material,; the tuning section including a waveguide 8 and the material of the waveguide incorporating a plurality of quantum dots and operating in a wavelength region where the value of rF is sufficiently greater than the value of sF<2>, so as to operate with the dominant effect on W n being contributed by the linear effect. The bandgap wavelength, g g ( g g may be less than 1400 nm) of the quantum dots incorporated into the tuning section may be less than that of photons emitted by the light creating section (whose wavelengths range between g 1 and g 2), with the change in refractive index at g 1 and g 2 in operation being substantially the same. The laser may also include a phase change section 2 which is also tunable. The preferred semiconductor material is a III-V semiconductor such as GaAs, InAs or InP, and the quantum dots may be self-assembled.
公开日期	2003-11-19
申请日期	2002-05-15
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/87480]
专题	半导体激光器专利数据库
作者单位	BOOKHAM TECHNOLOGY PLC
推荐引用方式 GB/T 7714	NICKOLAY, ZAKHLENIUK,ANTHONY, JAMES, HOLDEN. Tuneable Laser. GB2388708A. 2003-11-19.

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