A New Gain-Clamped L-Band Erbium-Doped Fiber Amplifier with Highly Efficient Gain

概要

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A clamped gain of 28 dB is obtained in an L-band erbium-doped fiber amplifier (EDFA) using only 84 mW of a 980 nm total pump power with 100 m EDF. Such highly efficient gain-clamped L-band EDFAs are achieved by simply adding an FBG and optical circulator to create a laser in a cavity for gain clamping. The amplifier gain is clamped at 28 dB for the dynamic range within $-20$ dBm with a gain variation of less than 0.2 dB. This gain-clamped amplifier also can support a 12-channel wavelength division multiplexing (WDM) system with a gain drop of less than 0.8 dB. The amplifier is expected to be able to support more channels if the laser is set at a wavelength that is within the L-band amplification region.
INSTITUTE OF PURE AND APPLIED PHYSICSの論文
2003-08-01