| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Impact of Spectral Filter on Phase Modulation Pulse in Fiber Front End System |
| LI Jing, WANG Jian-Jun, XU Dang-Peng, LIN Hong-Huan, GENG Yuan-Chao, LI Ming-Zhong, DENG Ying, ZHU Na, ZHANG Rui, JING Feng**
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| Research Center of Laser Fusion, China Academy of Engineering Physics, PO Box 919-988, Mianyang 621900 |
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| Cite this article: |
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LI Jing, WANG Jian-Jun, XU Dang-Peng et al 2011 Chin. Phys. Lett. 28 034205 |
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Abstract The transmission characteristics of phase modulation pulse transmitted through the filter in the power amplifier are investigated theoretically and experimentally. The narrow bandpass filter can induce large temporal modulation depth for the phase modulation pulse and induce double amplitude modulation (AM) if the frequency shift is lower than half bandwidth of the signal spectrum. We should choose a wider bandwidth filter to minimize the impact of the filter on the output pulse and suppress the amplified spontaneous emission (ASE) for the power fiber amplifier. These results are of benefit to the design of the fiber front end system.
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| Keywords:
42.60.By
42.79.Ci
42.81.Dp
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Received: 25 September 2010
Published: 28 February 2011
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| PACS: |
42.60.By
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(Design of specific laser systems)
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42.79.Ci
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(Filters, zone plates, and polarizers)
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42.81.Dp
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(Propagation, scattering, and losses; solitons)
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