Optical phase shifting, splitting and combining device

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	Optical phase shifting, splitting and combining device
其他题名	Optical phase shifting, splitting and combining device
	GODBOUT, NICOLAS; VACHON, NELSON
	2003-04-03
专利权人	ITF TECHNOLOGIES INC.
公开日期	2003-04-03
授权国家	美国
专利类型	发明申请
摘要	A Mach-Zehnder device including an input port, an output port, a substantially achromatic first coupling region optically connected to the input port and a substantially achromatic second coupling region optically connected to the output port. An intermediate region is optically connected to the first and second coupling regions. The intermediate region includes a first intermediate branch and a second intermediate branch. The first intermediate branch defines a phase shifting portion. The phase shifting portion, in turn, defines a phase shifting portion level of birefringence over the length of the phase shifting portion. The phase shifting portion level of birefringence is different that the level of birefringence prevailing over the remainder of the first intermediate branch. The birefringence differential between the phase shifting portion level of birefringence and the level of birefringence prevailing over the remainder of the first intermediate branch creates a polarization selective phase shift enabling the generally wavelength insensitive device to be used either as a coupler or splitter.
其他摘要	一种Mach-Zehnder器件，包括输入端口，输出端口，光学连接到输入端口的基本上消色差的第一耦合区域和光学连接到输出端口的基本上消色差的第二耦合区域。中间区域光学连接到第一和第二耦合区域。中间区域包括第一中间分支和第二中间分支。第一中间分支限定相移部分。相移部分又在相移部分的长度上限定了相移部分的双折射水平。双折射的相移部分水平不同于在第一中间分支的剩余部分上占优势的双折射水平。双折射的相移部分水平与在第一中间分支的其余部分上占优势的双折射水平之间的双折射差产生偏振选择性相移，使得通常波长不敏感的装置能够用作耦合器或分离器。
主权项	A Mach-Zehnder device for use with an optical signal, said Mach-Zehnder device comprising: a device input port and a device output port; a substantially achromatic first coupling region optically connected to said device input port; a substantially achromatic second coupling region optically connected to said device output port; an intermediate region optically connected to both said first and second coupling regions, said intermediate region including a first intermediate branch and a second intermediate branch, said first intermediate branch defining a phase shifting portion, said phase shifting portion defining a phase shifting portion level of birefringence over the length of said phase shifting portion, said phase shifting portion level of birefringence being different then an intermediate branch reference portion level of birefringence prevailing over at least an intermediate branch reference portion part of the remainder of said first intermediate branch.
申请日期	2002-03-05
专利号	US20030063834A1
专利状态	授权
申请号	US10/090128
公开（公告）号	US20030063834A1
IPC 分类号	G02B6/10 \| G02B6/28 \| H04B10/532 \| G02B6/27 \| G02F1/035 \| G02B6/26
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/181661/52660
专题	半导体激光器专利数据库
作者单位	ITF TECHNOLOGIES INC.
推荐引用方式 GB/T 7714	GODBOUT, NICOLAS,VACHON, NELSON. Optical phase shifting, splitting and combining device. US20030063834A1[P]. 2003-04-03.