Fused taper infrared optical fiber couplers in chalcogenide glass

We have fabricated low loss, high coupling ratio bidirectional optical couplers for infrared light using multimode step-index chalcogenide fiber. Using a fusion technique similar to that commonly employed with silica fibers, we have found a temperature regime where fusion can occur while interdiffus...

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Bibliographic Details
Published in:Journal of lightwave technology 1997-12, Vol.15 (12), p.2242-2245
Main Authors: Schaafsma, D.T., Moon, J.A., Sanghera, J.S., Aggarwal, I.D.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Glass
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
Optical coupling
Optical fiber communication
Optical fiber couplers
Optical fiber devices
Optical fiber losses
Optical surface waves
Silicon compounds
Surface treatment
Surface waves
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Summary:We have fabricated low loss, high coupling ratio bidirectional optical couplers for infrared light using multimode step-index chalcogenide fiber. Using a fusion technique similar to that commonly employed with silica fibers, we have found a temperature regime where fusion can occur while interdiffusion of the core and cladding materials will not. The resultant device has a roughly 3:1 coupling ratio, less than 0.3 dB of excess insertion loss, and preserves the guided modes of the fiber intact.
ISSN:0733-8724
1558-2213
DOI:10.1109/50.643548