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A novel wavelength tunable fiber laser with non-symmetric resonant cavity

The basic components of this wavelength tunable fiber laser include a broadband optical amplifier, an active fiber loop mirror, a polarization controller (PC), and an optical tunable filter. The broadband optical amplifier includes two optical amplifiers: praseodymium doped fluoride fiber amplifier (PDFA) and multiple quantum well optical semiconductor amplifier (MQW-SOA).