G - Physics – 02 – B
Patent
G - Physics
02
B
88/97.5
G02B 6/28 (2006.01) C03B 37/14 (2006.01)
Patent
CA 1254783
- 1 - Abstract: A star coupler for optical fibres is suspended in a protection tube. An optical fibre bundle is inserted into the tube, such as a hollow glass tube. Then the bundle is twisted and stretched while it is indirectly heated through the tube, whereby to form a twisted, fused and stretched portion. Then both ends of the tube are sealed with an adhesive agent to fix the bundle in the tube. This coupler can be constructed so as to be connected in tandem without any splicing. The coupler can use multi-mode optical fibres or single-mode optical fibres. It affords low insertion loss, reduced power deviation and a low manufacturing cost.
490143
Araki Hiroshi
Ikuta Yasushi
Imoto Katsuyuki
Kameyama Masayoshi
Maeda Minoru
Hitachi Ltd.
Kirby Eades Gale Baker
LandOfFree
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