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2. 发明申请

WO2007041405A1 LOW LOSS SPECTRALLY PERIODIC ALL-FIBER FILTERS 审中-公开
标题翻译：低损耗频谱全频滤波器
公开(公告)号：WO2007041405A1
公开(公告)日：2007-04-12
申请号：PCT/US2006/038262
申请日：2006-09-28
申请人： CORNING INCORPORATED , GAETA, Zagorka, D. , KUKSENKOV, Dmitri, V. , WOOD, William, A.
发明人： GAETA, Zagorka, D. , KUKSENKOV, Dmitri, V. , WOOD, William, A.
IPC分类号： G02B6/28 , G02B6/02
CPC分类号： G02B6/02052 , G02B6/2552 , G02B6/2813 , G02B6/2856 , G02B6/29368 , G02B6/29389
摘要： The present invention provides a method (10) and resulting device for producing a low-loss spectrally periodic all fiber filter (40, 50) by providing a multi-mode fiber (402, 502) capable of propagating an LP0l mode (310) and an LP02 mode (320) at wavelengths of interest and providing a single-mode fiber (404, 506) capable of propagating a fundamental mode (330) at the wavelengths of interest and splicing a selected length of the multi-mode fiber (402, 502) between lengths of the single-mode fiber (404, 504), where the properties of the multi-mode fiber (402,502) and the single-mode fiber (404, 504) are related such that the optical field distribution resulting from the coherent superposition of the optical field of the LP0l mode (310) and the optical field of the LP02 mode (320) in the multi-mode fiber (402, 502) is sufficiently similar to the optical field distribution of the fundamental mode (330) in the single-mode fiber (404,504) at the wavelengths of interest, such that transmission across the two splices taken together at the wavelengths of interests is at least 70 %, desirably at least 80 % and most desirably at least 90 %, and the extinction ratio of the filter is at least 1OdB. The method may also include the step (106) of monitoring light passing through the spliced length of the multi-mode fiber (402, 502) while tapering the multi-mode fiber (402, 502) to adjust the spectral profile of the resulting filter (40, 50).
摘要翻译：本发明提供了一种通过提供能够传播LP01模式（310）的多模光纤（402,502）和用于产生低损耗光谱周期性全光纤滤波器（40,50）的方法（10）和所产生的装置，以及在感兴趣的波长处的LP02模式（320），并且提供能够在感兴趣的波长处传播基本模式（330）的单模光纤（404,506），并且将多模光纤（402,426）的选定长度（404,504）的长度之间，其中多模光纤（402,502）和单模光纤（404,504）的属性相关联，使得由所述单模光纤（402,502）和所述单模光纤在多模光纤（402,502）中LP01模（310）的光场和LP02模（320）的光场的相干叠加与基模（330）的光场分布充分相似，在感兴趣的波长处的单模光纤（404,504）中，使得透射在感兴趣的波长处合并在一起的两个接头之间的离子为至少70％，期望地为至少80％，最优选为至少90％，并且滤波器的消光比为至少10dB。该方法还可以包括步骤（106），该步骤（106）监测通过多模光纤（402,502）的拼接长度的光，同时使多模光纤（402,502）逐渐变细，以调整所得滤光片的光谱分布（40,50）。

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