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	Tunable tandem laser consisting of self-pulsating two section DFB laser for generating an optical clock frequency
	NOLTING, HANS-PETER; GRAVERT, MARTIN
	2002-10-24
著作权人	FRAUNHOFER-GESELLSCHAFT ZUR F&OUML,RDERUNG DER ANGEWANDTEN FORSCHUNG
专利号	WO2002084827A2
国家	世界知识产权组织
文献子类	发明申请
其他题名	Tunable tandem laser consisting of self-pulsating two section DFB laser for generating an optical clock frequency
英文摘要	Known two section lasers for generating optical clock frequency have two tuning sections for fine tuning the phase and for attenuation/intensification. However, not all two section lasers produced can be adjusted and used due to a relatively high fluctuation span in resulting parameters such as extinction and jitter. In the tandem laser (TL) according to the invention, both DFB lasers are high-pumped DFB lasers (DFB1, DFB2) having different wavelengths ( lambda 1, lambda 2) with a complex coupling (Kcomplex) for unmistakable, stable mode pair coupling by means of grids that influence both the phase speed by modifying the refractive index and the intensification profile in each DFB laser (DFB1, DFB2). Offset (OS) as difference in wavelengths ( lambda 1, lambda 2) is preselected in a broad range for roughly selecting the clock pulse frequency (fT roughly). Very high, stable working ranges are reached through fine tuning (fT fine) by means of controllable tuning sections (TS), wherein the selections available in produced lasers are no longer needed. The tandem laser according to the invention can be used as stable clock pulse regenerator, especially for optical deciders in 3R-regenerators in optical networks with up to ultrahigh bit rates. Space and cost-saving cascaded parallel connections are possible.
公开日期	2002-10-24
申请日期	2002-04-04
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/51342]
专题	半导体激光器专利数据库
作者单位	FRAUNHOFER-GESELLSCHAFT ZUR F&OUML,RDERUNG DER ANGEWANDTEN FORSCHUNG
推荐引用方式 GB/T 7714	NOLTING, HANS-PETER,GRAVERT, MARTIN. Tunable tandem laser consisting of self-pulsating two section DFB laser for generating an optical clock frequency. WO2002084827A2. 2002-10-24.

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