Title :
Coherent, hollow-core waveguide bundles as a potential tool for transendoscopic infrared imaging
Author :
Gannot, Isreal ; Goren, Alon ; Harrington, James A.
Author_Institution :
Lab. of Integrative & Med. Biophys., Nat. Inst. of Health, Bethesda, MD, USA
Abstract :
A coherent IR fiber optic bundles for use in IR imaging from 8 to 12 μm have been fabricated from rigid hollow glass waveguide arrays. The bore of each hollow glass tube in the bundle has been coated with thin films of metallic Ag followed by AgI for enhanced reflectivity. The coated bundle was characterized for it spectral response, thermal and spatial resolution, sensitivity, linearity and cross talk. Images of different objects with controlled temperatures were taken. In parallel, animal experiments have also started. Lesions were created with a closed loop controlled fiber optics based laser systems and thermal mapping of the irradiated tissue was done through the coherent coated bundle.
Keywords :
biological tissues; biomedical optical imaging; endoscopes; fibre optic sensors; infrared imaging; optical arrays; optical fibre cladding; optical fibre fabrication; optical fibre testing; reflectivity; silver; silver compounds; 8 to 12 mum; Ag-AgI; IR fiber optic bundles; reflectivity; rigid hollow glass waveguide arrays; spatial resolution; spectral response; thermal mapping; thermal resolution; thin film coating; transendoscopic infrared imaging; Boring; Glass; Hollow waveguides; Infrared imaging; Optical arrays; Optical fibers; Optical imaging; Optical waveguides; Reflectivity; Transistors;
Conference_Titel :
Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE
Print_ISBN :
0-7803-8557-8
DOI :
10.1109/LEOS.2004.1363497
