G - Physics – 02 – B
Patent
G - Physics
02
B
26/197, 88/97.5
G02B 6/28 (2006.01) G02B 27/10 (2006.01)
Patent
CA 2032876
A fiber is mounted with a bare portion extending between two blocks. Four blocks securing a pair of fibers in this manner are mutually aligned by one or more external sleeves, and the fibers are fused and drawn to form a coupler of defined coupling ratio. One sleeve then slides over all four blocks and is bonded to constitute a rigid housing surrounding the fusion region. A preferred coupling block is a grooved D-rod, and different geometries are shown to provide effective PZ and PM fusion couplings, with fiber stress axes aligned with respect to a flat surface of the rod. Portions of the rod provide fiber support and alignment during fusion, and break away from the assembled coupler when complete.
Riches Mckenzie & Herbert Llp
The Charles Stark Draper Laboratory Inc.
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