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2. Microwave-multiplexed wideband lightwave systems using optical amplifiers for subscriber distribution
3. , , and , ‘Carrier-to-noise ratio performance of a ninety-channel FM video optical system employing subcarrier multiplexing and two cascaded traveling-wave laser amplifiers’, Optical Fiber Communications Conference, San Francisco, CA, 1989, paper WC3.
4. Noise figure for erbium-doped optical fibre amplifiers
5. 5.2 dB noise figure in a 1.5 μm InGaAsP travelling-wave laser amplifier