Cumulative waveform distortion in cascaded optical amplifierrepeaters for multigigabit IM/DD systems |
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| Authors: | Tomofuji H Nishimoto H Horimatsu T Minami T Touge T |
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| Affiliation: | Fujitsu Lab. Ltd., Kawasaki; |
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| Abstract: | An analysis was conducted of a cumulative pattern-dependent waveform distortion in cascaded semiconductor laser and Er3+-doped fiber amplifiers. At 2.5 Gb/s, cumulative waveform distortion limits the number of cascaded amplifiers to about 20 for the semiconductor amplifiers. The Er3+-doped fiber amplifier is relatively unaffected-over 100 stages can be cascaded. The Er3+ amplifier is seen to be the better choice for long-haul multigigabit systems |
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