Acta Optica Sinica, Volume. 26, Issue 9, 1308(2006)
Optical Automatic GainClamped ErbiumDoped Fiber Amplifier Based on a High-Birefringence Fiber Bragg Grating
Spatial holeburning caused by ununiform widening of erbiumdoped fiber barricades the fully gaincontrolled amplification of laser with single wavelength. A novel configuration of automatic gainclamped optical erbiumdoped fiber amplifier is presented, and a high-birefringence fiber Bragg grating is used to generate pumping lasers, peaks of which are written at 1549.3 nm and 1549.83 nm with a wavelength spacing of 0.53 nm. By adjusting a polarization controller, single or dual laser gain control is realized. The design has a gainclamped bandwidth of 40 nm (1530~1570 nm). Within the dynamic range of input power -40~-15 dBm, the average gain and noise figure of the dual laser gain controlled erbiumdoped fiber amplifier are approximately 22.22 dB and 8.69 dB, and their excursions are limited in 0.69 dB and 1.51 dB, respectively. The system performance testing shows that the more stable characteristic of dual laser controlled erbiumdoped fiber amplifier is an obvious advantage over the single laser controlling.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Optical Automatic GainClamped ErbiumDoped Fiber Amplifier Based on a High-Birefringence Fiber Bragg Grating[J]. Acta Optica Sinica, 2006, 26(9): 1308