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    • 9. 发明授权
    • Athermal external cavity laser
    • 热外腔激光器
    • US07580441B2
    • 2009-08-25
    • US11634792
    • 2006-12-05
    • Jie Hyun LeeMahn Yong ParkGeon JeongChul Young KimSeung Hyun ChoWoo Ram LeeByoung Whi Kim
    • Jie Hyun LeeMahn Yong ParkGeon JeongChul Young KimSeung Hyun ChoWoo Ram LeeByoung Whi Kim
    • H01S3/08
    • H01S5/146G02B6/0218G02B6/0219G02B6/4206H01S5/02284H01S5/02288H01S5/0654H01S5/141H01S5/142
    • Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding. The ECL does not need additional temperature controlling components and thus can be manufactured compact and at low cost, and thus can be used as a light source of a dense wavelength division multiplexing (DWDM) system in designing economical WDM passive optical networks (PON).
    • 提供了一种无热外腔激光器(ECL),其输出光功率和输出波长可以在不使用额外的温度控制部件的情况下保持规则,而不管温度变化。 ECL包括:半导体放大器; 包括其中形成布拉格光栅的芯和围绕所述芯的包层的光纤; 以及热固性聚合物,其将光纤固定到套圈并且具有负热光学系数,其中形成布拉格光栅的芯周围的包层的厚度小于围绕芯的部分的包层部分的厚度, 不形成布拉格光栅,并且热固性聚合物的负热光学系数围绕包层。 ECL不需要额外的温度控制部件,因此可以制造成本小,成本低,因此可以用作密集波分复用(DWDM)系统的光源,用于设计经济的WDM无源光网络(PON)。