| 摘要 |
PURPOSE:To decrease the number of adhering points and to improve the characteristic resistant to moist environment by providing a pair of holders and fixing selfoc lenses and ferrules. CONSTITUTION:A selfoc lens 3 and a ferrule 2 are grasped and fixed together from above and below by means of a pair of holders 24 and 25. The adhering points for each one demultiplexing channel are seven points; between a central glass block 5/a lambda1 wavelength selecting filter 6, between the filter 6/a spacer block 4, between the block 4/the selfoc lens 3, between the lens 3/the ferrule 2, between the lens 3, the ferrule 2/the lower holder 24 for fixing commonly the positions of 2, 3, between the holder 24/the upper holder 25 for fixing and between the holder 25/a glass base 14. The adhering points in this example are total twenty-two points with four channels and are less by light points than the adhering points of the conventional construction. |
