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	Method & apparatus for optical transmission
	WILLIAMSON, ROBERT S. III; MARSLAND, ROBERT A.; RODWELL, MARK
	2003-07-24
著作权人	NEW FOCUS, INC.
专利号	US20030138024A1
国家	美国
文献子类	发明申请
其他题名	Method & apparatus for optical transmission
英文摘要	The present invention provides a method and apparatus for transmission of optical communications. The present invention provides an optical transmitter which includes a control circuit to enhance the stability of output power levels, a modulator circuit with precise impedance matching for high frequency performance, and an optical coupling mechanism that relaxes the alignment tolerances between the laser and the fiber and decreases the sensitivity of the gain medium to feedback from devices coupled to the fiber. These features allow the transmitter to deliver an optical output beam which can be modulated over a wide range of frequencies, duty cycles and amplitudes with very precise definition of the rising and falling edges of the waveform. In combination these features result in an optical transmitter that may be fabricated with relatively low cost and a reduced form factor when compared with prior art optical transmitters. In an embodiment of the invention a semiconductor laser transmitter is disclosed. The semiconductor laser transmitter includes: a gain medium, an optical fiber, and a reflector. The gain medium generates an emission along a path. The optical fiber includes a tip portion located in the path to optically couple with the emission. A reflector is located on the tip portion to limit an optical coupling efficiency of said gain medium with said optical fiber. In an alternate embodiment of the invention a method for transmitting optical power is disclosed.
公开日期	2003-07-24
申请日期	2003-01-15
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/52939]
专题	半导体激光器专利数据库
作者单位	NEW FOCUS, INC.
推荐引用方式 GB/T 7714	WILLIAMSON, ROBERT S. III,MARSLAND, ROBERT A.,RODWELL, MARK. Method & apparatus for optical transmission. US20030138024A1. 2003-07-24.

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