| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical wavelength filter module comprising optical fiber components. <P>SOLUTION: The optical wavelength filter module includes a first optical circulator 2A and a second optical circulator 2B, which project light incident on a first port from a second port and projects light which is incident on the second port from a third port, an optical fiber 5 for separation having fiber Bragg grating (FGB) portions 6a and 6b transmitting light of predetermined wavelength and reflecting lights of other wavelengths; and an optical fiber demultiplexer 4 which demultiplexes the light of the other wavelength, where a third port of the first optical circulator 2A and a first port of the second optical circulator 2B are connected, the optical fiber 5 for separation is connected to a second port of the second optical circulator 2B, and the optical fiber demultiplexer 4 is connected to a third port of the second optical circulator 2B. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
