Title :
Temperature dependence of signal gain in Er3+-doped optical fiber amplifiers
Author :
Yamada, Makoto ; Shimizu, Makoto ; Horiguchi, Masaharu ; Okayasu, Masanobu
Author_Institution :
NTT Opto-Electron. Lab., Ibaraki, Japan
fDate :
3/1/1992 12:00:00 AM
Abstract :
Temperature-dependent signal gain characteristics at signal wavelengths of 1.536 and 1.552 μm in Er3+-doped optical fibers with a temperature range of -40 to 80°C are reported for 0.98 and 1.48 μm pumping. The temperature dependences of signal gain strongly depend on fiber length, pump wavelength, and signal wavelength. The fiber length at which signal gain temperature insensitivity occurs is found for the amplification of a 0.98-μm-pump-1.536-μm-signal, a 0.98-μm-pump-1.552-μm-signal, and a 1.48-μm-pump-1.536-μm-signal. It is confirmed theoretically that the temperature dependences result from linear changes in the fluorescence, and absorption cross sections at the signal and pump wavelengths, and a shift in the effective pump wavelength
Keywords :
erbium; fibre lasers; laser transitions; optical pumping; thermo-optical effects; 0.98 micron; 1.48 micron; 1.522 micron; 1.536 micron; Er3+-doped optical fiber amplifiers; absorption cross sections; amplification; fiber length; fluorescence; pump wavelength; pumping; signal gain temperature insensitivity; signal wavelengths; temperature dependent signal gain characteristics; temperature range; Absorption; Equations; Erbium; Fluorescence; Laser tuning; Optical fiber amplifiers; Optical fibers; Power amplifiers; Temperature dependence; Temperature sensors;
Journal_Title :
Quantum Electronics, IEEE Journal of
