Multiple-mode reconfigurable electro-optic switching network for optical fiber sensor arrayThis paper reports the first switching network compatible with multimode fibers. A one-to-many cascaded reconfigurable interconnection was built. A thin glass substrate was used as the guiding medium which provides not only higher coupling efficiency from multimode fiber to waveguide but also better tolerance of phase-matching conditions. Involvement of a total-internal-reflection hologram and multimode waveguide eliminates interface problems between fibers and waveguides. The DCG polymer graft has proven to be reliable from -180 C to +200 C. Survivability of such an electrooptic system in harsh environments is further ensured. LiNbO3 was chosen as the E-O material because of its stability at high temperatures (phase-transition temperature of more than 1000 C) and maturity of E-O device technology. Further theoretical calculation was conducted to provide the optimal interaction length and device capacitance.
Document ID
19920063621
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, Ray T. (NASA Lewis Research Center Cleveland, OH, United States)
Wang, Michael R. (NASA Lewis Research Center Cleveland, OH, United States)
Jannson, Tomasz (Physical Optics Corp. Torrance, CA, United States)
Baumbick, Robert (NASA Lewis Research Center Cleveland, OH, United States)