Photothermal effects in passive Fabry-Perot resonators are caused by the conversion of circulating optical energy into heat as a result of absorption. This results in thermal change in the resonator's optical path length, the round-trip phase, and hence the resonance condition. We describe a simplified dynamic numerical model for photothermal effects in passive fiber Bragg grating resonators and present results of their experimental observation.
© 2005 Optical Society of America
(060.2340) Fiber optics and optical communications : Fiber optics components
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(140.6810) Lasers and laser optics : Thermal effects
(190.4870) Nonlinear optics : Photothermal effects
(230.1480) Optical devices : Bragg reflectors
Jong H. Chow, Benjamin S. Sheard, David E. McClelland, Malcolm B. Gray, and Ian C. M. Littler, "Photothermal effects in passive fiber Bragg grating resonators," Opt. Lett. 30, 708-710 (2005)