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11 January 2005 A high-power multiwavelength comb laser source
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We present a simple method to generate a stable high-power (> 30 dBm) multi-wavelength ytterbium/erbium co-doped double-cladding fiber ring laser source at room temperature. This method is based a wavelength-dependent filter through spatial mode beating between the LP01 and LP11 modes within the multimode fiber section. We also investigate the relationship between the lasing wavelengths and the length of the ytterbium/erbium fibers (YEFs), the number of lasing wavelength lines dependent on the total pumping power level and the polarization states, and the characteristics of both the wavelength switching operation and the total output power. Eight simultaneous lasing wavelengths with 0.78 nm spacing were generated at room temperature.
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Zhenguo Lu, Fengguo Sun, Arnaud Lavigne, Peng Lin, and Chander Prakash Grover "A high-power multiwavelength comb laser source", Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005);

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