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	Programmable optical grating device and method
	LEVNER, DANIEL; FAY, MARTIN F.; BLOCH, JONATHAN C.; WEISS, JEFFREY
	2008-02-28
著作权人	BROWN UNIVERSITY RESEARCH FOUNDATION
专利号	US20080050068A1
国家	美国
文献子类	发明申请
其他题名	Programmable optical grating device and method
英文摘要	An optical waveguide has a surface. An array of separately actuated bodies is disposed proximal to the exposed surface, and an actuator separately actuates at least some of the bodies to change a spectral characteristic of a wave propagating through the waveguide. Preferably, the bodies are metal striplines, an electro-optical material is disposed between the striplines and the exposed surface, and the actuator is a CMOS chip that imposes a voltage to some or all of the lines. The voltage changes the refractive index at the interface with the surface, changing an index of refraction profile of the waveguide and effectively imposing a grating. Alternatively, the bodies are micro-beams and the actuator, also controlled by a CMOS chip, separately moves each micro-beam into and out of proximity to the surface. The grating is programmable via the CMOS chip. The programmable gratings may be used to couple different waves in the same or different waveguides, and may act as Bragg gratings, binary supergratings, or multi-level supergratings.
公开日期	2008-02-28
申请日期	2007-08-15
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/53956]
专题	半导体激光器专利数据库
作者单位	BROWN UNIVERSITY RESEARCH FOUNDATION
推荐引用方式 GB/T 7714	LEVNER, DANIEL,FAY, MARTIN F.,BLOCH, JONATHAN C.,et al. Programmable optical grating device and method. US20080050068A1. 2008-02-28.

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