We report a new novel technique to suppress the temperature-dependent gain (TDG) of erbium-doped fiber amplifier in the C-band by providing a composite optical gain block, conventional erbium-doped fiber (EDF) serially concatenated with Sb-doped silica EDF. Compared with conventional EDFs, Sb-doped silica EDF showed an opposite TDG coefficient in the C-band. Detailed experimental athermalization schemes are reported for various concatenating configurations. The temperature-dependent optical gain variation was suppressed within ±0.35 dB for the temperature range of - 40 °C to +80 °C from 1530 to 1560 nm.
Bibliographical noteFunding Information:
Manuscript received July 6, 2004; revised August 18, 2004. This work was supported in part by KOSEF through the UFON Research Center and in part by MOE through the BK21 Program. Y.-E. Im, U.-C. Ryu, J. W. Lee, and K. Oh are with the Department of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea (e-mail: firstname.lastname@example.org). D. J. DiGiovanni is with OFS Laboratories, Murray Hill, NJ 07974 USA. B. Wang is with OFS Fitel, Somerset, NJ 08873 USA. Digital Object Identifier 10.1109/LPT.2004.838631
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering