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	Switchable wavelength router
	WU, KUANG-YI; LIU, JIAN-YU
	1997-12-02
著作权人	MACRO-VISION COMMUNICATIONS, LLC
专利号	US5694233
国家	美国
文献子类	授权发明
其他题名	Switchable wavelength router
英文摘要	A switchable wavelength router has a first birefringent element that decomposes and spatially separates an incoming WDM optical signal into two orthogonally-polarized beams. A first polarization rotator selectably rotates the polarization of one of the beams to match the polarization of other beam, based on an external control signal. A wavelength filter (e.g., stacked waveplates) provides a polarization-dependent optical transmission function such that the first beam decomposes into third and fourth orthogonal beams, and the second beam decomposes into fifth and sixth orthogonal beams. The third and fifth beams carry a first spectral band at a first polarization and the fourth and sixth beams carry a second spectral band at an orthogonal polarization. A second birefringent element spatially separates these four beams into four horizontally polarized and vertically polarized components. A second polarization rotator rotates the polarizations of the beams so that the third and fifth beams, and the fourth and sixth beams are orthogonally polarized. A third birefringent element recombines the third and fifth beams (i.e., the first spectral band), and also recombines the fourth and sixth beams (i.e., the second spectral band) which are coupled to the two output ports based on the control state of the wavelength router.
公开日期	1997-12-02
申请日期	1997-01-08
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/36370]
专题	半导体激光器专利数据库
作者单位	MACRO-VISION COMMUNICATIONS, LLC
推荐引用方式 GB/T 7714	WU, KUANG-YI,LIU, JIAN-YU. Switchable wavelength router. US5694233. 1997-12-02.

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