Abstract-We propose a new technique to reduce the temperature-dependent gain (TDG) tilt of erbium-doped fiber amplifier in the C-band by supplying a composite optical gain block, conventional aluminum-rich erbium-doped fiber (EDF) serially concatenated with a special EDF composed of phosphorus-doped silica host, which showed opposite TDG coefficients in the C-band. The TDG variation was suppressed to less than ±0.45 dB for the saturated gain of 16 dB in 1525-1565 nm, within the temperature range of -40°C to +80 °C.
Bibliographical noteFunding Information:
Manuscript received February 28, 2006; revised July 7, 2006. This work was supported by KOSEF under Grant R01-2004-000-10846-0 from the Basic Program. Y.-E. Im, S.-R. Han, and C.-S. Park are with the Department of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea (e-mail: email@example.com). K. Oh is with the Institute of Physics and Applied Physics, Yonsei University, 120-749 Seoul, South Korea. Color versions of Figs. 2–5 are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2006.883200
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering