We demonstrate a multiwavelength fiber optical parametric oscillator based on a nonlinear fiber as the gain medi um. Using a transmission grating filter cascaded with a programmable filter as wavelength-selective elements, we achieve multiwavelength operation with 129 lasing wavelengths spaced apart by . The power nonuniformity is less than with a power fluctuation of less than over a period. Moreover, we realize tunable and reconfigurable functions over the entire lasing spectrum (~25.6 nm), which greatly enhances the performance and flexibility of this laser.
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