[OPTICAL REVIEW Vol. 7, No. 3 (2000) 190-192]
Temperature Dependence of Resonant Four Wave Mixing in Erbium-Doped Optical Fibers
Yoh IMAI and Hideo UEDA
Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4, Kawazu, Iizuka-shi, Fukuoka, 820-8502 Japan
(Received December 4, 1999; Accepted March 8, 2000)
Temperature dependence of resonant four-wave mixing (RFWM) in an erbium-doped optical fiber without amplification is investigated experimentally. A large change in the refractive index resulting from the transition absorption is induced in the erbium-doped fiber. The maximum reflectivity of RFWM at 0.3 m fiber length increases from 4.1% to 5.5% with change in temperature from 40°C to − 196°C. The temperature-dependent reflectivity characteristics correspond to the change in the absorption cross section at 1.53 μm wavelength.
Key words : resonant four wave mixing, transition absorption, photo-induced refractive index change, erbium-doped optical fiber