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3 October 1994 All-optical switching using color centers in irradiated silica fibers
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We report an all-optical switch in a two-mode silica fiber based on a resonant nonlinearity introduced by color centers in an irradiated P2O5-SiO2 fiber. Full switching of a 900 nm signal was observed in a 22 cm length of fiber for only 1 (mu) J of absorbed 532 nm pump energy, with a projected response time under 10 ns. This switch operated with a peak power two orders of magnitude lower than for a comparable Kerr effect device operated under identical conditions. Photobleaching was observed and is believed to be a solvable issue.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert W. Sadowski, Michel J. F. Digonnet, Richard H. Pantell, and H. John Shaw "All-optical switching using color centers in irradiated silica fibers", Proc. SPIE 2289, Doped Fiber Devices and Systems, (3 October 1994);

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