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We demonstrate a widely tunable ring-cavity tellurite fiber Raman laser covering the S+C+L+U band. A high optical signal-to-noise ratio of over 60 dB for almost all the tunable range is also obtained.
We describe a rare-earth-doped optical fiber amplifier for a CWDM transmission system that uses eight channels ranging from 1470 to 1610 nm. The amplifier has a relatively simple configuration and achieved an average gain of 22.5 dB with a gain variation of 2 dB in the 1463-1537 and 1543-1617 nm wavelength regions.
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