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	Optical power adjustment circuits for parallel optical transmitters
	PASCHAL, MATTHEW JAMES; DEMSKY, KEVIN PAUL; FREITAG, LADD WILLIAM
	2003-09-23
著作权人	INTERNATIONAL BUSINESS MACHINES CORPORATION
专利号	US6624917
国家	美国
文献子类	授权发明
其他题名	Optical power adjustment circuits for parallel optical transmitters
英文摘要	Optical power adjustment is provided for parallel optical transmitters, in particular, for an array of vertical cavity surface emitting lasers (VCSEL's). The lasers in the array can be independently digitally adjusted with associated digital circuitry to compensate for manufacturing and temperature variations. In particular, the threshold current and modulation current for each VCSEL in the array, as well as a global temperature coefficient for all the VCSEL's in the array, can be digitally setup and adjusted for desired power levels. Once set, the associated digital code can be stored in non-volatile memory, and loaded at powering-up of the transmitters.
公开日期	2003-09-23
申请日期	1999-10-28
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/44988]
专题	半导体激光器专利数据库
作者单位	INTERNATIONAL BUSINESS MACHINES CORPORATION
推荐引用方式 GB/T 7714	PASCHAL, MATTHEW JAMES,DEMSKY, KEVIN PAUL,FREITAG, LADD WILLIAM. Optical power adjustment circuits for parallel optical transmitters. US6624917. 2003-09-23.

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