Characterization of metal-sulfide-coated hollow glass waveguides

Pal O Pedersen; James A Harrington

doi:10.1117/12.532506

10 June 2004 Characterization of metal-sulfide-coated hollow glass waveguides

Pal O Pedersen, James A Harrington

Proceedings Volume 5317, Optical Fibers and Sensors for Medical Applications IV; (2004) https://doi.org/10.1117/12.532506
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

Hollow glass waveguides (HGWs) have been fabricated with CdS and PbS dielectric coatings deposited on Ag. HGWs were fabricated with both single layer CdS and PbS coatings on Ag and with multilayer CdS/PbS coatings on Ag. The straight and bending losses for the Ag/metal-sulfide HGWs have been measured at 10.6 μm. Single layer Ag/metal-sulfide HGWs have theoretical losses comparable to the traditional Ag/AgI fibers, but the transmission range can be extended to wavelengths as short as 500 nm for CdS films. The use of multiple metal-sulfide layers can reduce the losses substantially, with a theoretical 3-fold reduction in loss using a 3 layer CdS/PbS/CdS stack. The measured losses of metal/metal-sulfide HGWs are higher than predicted by theory. A single layer CdS HGW has a loss 3-4 times higher than Ag/AgI. A single layer Ag/PbS HGW has a loss 8 times higher than Ag/AgI. A 3-layer Ag/CdS/PbS/CdS have a loss 50% lower than single layer Ag/CdS

Citation Download Citation

Pal O Pedersen and James A Harrington "Characterization of metal-sulfide-coated hollow glass waveguides", Proc. SPIE 5317, Optical Fibers and Sensors for Medical Applications IV, (10 June 2004); https://doi.org/10.1117/12.532506

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