We report a novel technique to suppress the temperature-dependent gain (TDG) of an L-band erbium-doped fiber amplifier. The composite optical gain block consists of conventional L-band erbium-doped fiber (EDF) serially concatenated with a special EDF in a ternary glass composition, antimony-aluminum codoped silica that showed an opposite TDG coefficient in the L-band. The TDG variation of the composite gain block was suppressed to less than ±1.5 dB for a saturated gain of 15 dB between 1565 and 1605 nm, measured over a temperature range of -40 °C to +80 °C.
Bibliographical noteFunding Information:
Manuscript received April 1, 2005; revised May 2, 2005. This work was supported in part by the KOSEF through the UFON Research Center, and in part by the MOE through the BK21 Program. Y.-E. Im 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: email@example.com; firstname.lastname@example.org) S. H. Chang and K. Kim are with the Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-350, South Korea (e-mail: email@example.com; firstname.lastname@example.org). D. J. DiGiovanni is with OFS Laboratories, Murray Hill, NJ 07974 USA (e-mail: email@example.com). Digital Object Identifier 10.1109/LPT.2005.851890
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering