G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/26 (2006.01) G02B 6/255 (2006.01) G02B 6/28 (2006.01)
Patent
CA 2070215
In an optical fiber coupler fabricating process where couplers are successively formed by heating, elongating and cutting a plurality of long optical fibers, light is led into the first end of the fiber, reflected at the second end of the coupler, and the reflected light is monitored by photodetectors. In this manner, an exact splitting ratio can be obtained. Techniques for inimi zing measuring errors caused by the inter-reflected-light interference, the inter-Rayleigh-scattering-light interference, and the interference between the reflected light and the Rayleigh scattering light, while exploiting the advantageous feature of the reflection monitor method that the fiber connection work for each fiber coupler fabrication is not required are disclosed.
Arimoto Kazuhiko
Fukuma Masumi
Sasaoka Eisuke
Suganuma Hiroshi
Takimoto Hiroaki
Riches Mckenzie & Herbert Llp
Sumiden Opcom Ltd.
Sumitomo Electric Industries Ltd.
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