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Ten-to-twenty gigabit-per-second modulation performance of 1.5-μm distributed feedback lasers for frequency-shift-keying systems

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6 Author(s)

The frequency modulation (FM) and amplitude modulation (AM) responses of a 1.5-μm distributed feedback (DFB) laser were measured to 15 GHz. At 9-mW output power, the magnitude of the FM response was flat out to 12 GHz, and there was a 15-25-ps delay between the FM and AM responses. Computer simulation techniques indicate that the measured FM response is adequate to produce good eye patterns for frequency-shift-keying modulation at data rates up to 20 Gb/s. The high-speed frequency-shift-keying modulation capability of this 1.5-μm DFB laser was experimentally confirmed at 11 Gb/s

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Lightwave Technology, Journal of  (Volume:7 ,  Issue: 10 )