公开(公告)号：WO2004088373A1

公开(公告)日：2004-10-14

申请号：PCT/IL2004/000298

申请日：2004-03-31

Applicant: LAMBDA CROSSING LTD. ,  SCHEUER, Jacob ,  MARGALIT, Moti ,  BORTMAN-ARBIV, Daphna

Inventor： SCHEUER, Jacob ,  MARGALIT, Moti ,  BORTMAN-ARBIV, Daphna

IPC: G02B6/12

CPC classification number: G02B6/29343 ,  G02B6/12007 ,  G02B2006/12109

Abstract: A filtering method and optical filter structure are presented. The structure comprises an input waveguide (W1), an output waveguide (W2), and a filter stage formed by at least one closed loop resonator (R1-R2) optically coupled to the input and output waveguides. A level of the coupling from each of the waveguides to the resonator is at least 5 times greater than a loss-per-revolution of the resonator. The filter structure thus provides for reducing a bandwidth and insertion loss while filtering at least one optical channel from a multi-channel light signal.

Abstract translation: 提出了一种滤波方法和滤光器结构。 该结构包括输入波导（W1），输出波导（W2）和由至少一个光耦合到输入和输出波导的闭环谐振器（R1-R2）形成的滤波器级。 从每个波导到谐振器的耦合的电平比谐振器的每转损耗的至少大5倍。 因此，滤波器结构提供了减少带宽和插入损耗，同时从多通道光信号滤波至少一个光通道。