1 October 1995 Directional multimode fiber couplers in the mid-infrared
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Abstract
Construction and characterization of the first multimode fiber couplers in the mid-IR region (2 to 10 μm) are reported. These couplers are made of step-index As2Se3 chalcogenide glass fibers whose cores were brought to a contact along a certain distance. Far-field measurements using selective angular excitation indicated a typical coupling ratio of 15% (8.2 dB) from couplers made of 550-μm core diameter fibers with a 10-cm interaction length. The excess insertion loss was less than 0.2 dB. Strong mode mixing caused by the coupling mechanism is observed, resulting in a significant broadening of the radiation distribution.
Israel Tugendhaft, Israel Tugendhaft, Aharon Bornstein, Aharon Bornstein, Yitzhak Weissman, Yitzhak Weissman, Amos A. Hardy, Amos A. Hardy, } "Directional multimode fiber couplers in the mid-infrared," Optical Engineering 34(10), (1 October 1995). https://doi.org/10.1117/12.210769 . Submission:
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