C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
26/197, 88/97.6
C03B 19/00 (2006.01) C03B 37/012 (2006.01) C03B 37/014 (2006.01) C03B 37/018 (2006.01) C03B 37/075 (2006.01) G02B 6/10 (2006.01)
Patent
CA 1177297
Abstract of the Disclosure A single mode optical waveguide is constructed in a manner such that the core thereof is subjected to a stress- induced birefringence. In accordance with one embodiment the fiber comprises an oblong core surrounded by an oblong inner cladding layer. An outer layer of stress cladding glass, which has a circular outer surface, surrounds the inner cladding layer. The TCE of the stress cladding glass is different from that of the inner cladding glass. In another embodiment the stress-induced birefringence is accomplished by introducing into the cladding region of the fiber on opposite sides of the core longitudinally extending regions of glass having a thermal coefficient of expansion different from that of the remainder of the cladding. A number of novel techniques are disclosed for forming such fibers.
397687
Blankenship Michael G.
Keck Donald B.
Sarkar Arnab
Corning Glass Works
Gowling Lafleur Henderson Llp
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