Microwave photonic filter with variable coefficients based on polarization mode interference

Zhang Cheng; Yan Lianshan; Pan Wei; Luo Bin; Zou Xihua; Chen Zhiyu; Lu Bing

doi:10.3788/HPLPB20132511.2846

Volume 25 Issue 11

Dec. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(11): 2846-2850

Zhang Cheng, Yan Lianshan, Pan Wei, et al. Microwave photonic filter with variable coefficients based on polarization mode interference[J]. High Power Laser and Particle Beams, 2013, 25: 2846-2850. doi: 10.3788/HPLPB20132511.2846

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Zhang Cheng, Yan Lianshan, Pan Wei, et al. Microwave photonic filter with variable coefficients based on polarization mode interference[J]. High Power Laser and Particle Beams, 2013, 25: 2846-2850. doi: 10.3788/HPLPB20132511.2846

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Microwave photonic filter with variable coefficients based on polarization mode interference

doi: 10.3788/HPLPB20132511.2846

1.
Center for Information Photonics and Communications,School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China

Received Date: 2013-03-04
Rev Recd Date: 2013-06-11
Publish Date: 2013-10-28

Abstract

Abstract

Based on the principle of polarization modulation and optical interference, a microwave photonic filter with positive coefficients and negative coefficients is proposed and an experimental model is set up to verify the feasibility of the project design. With polarization modulation and the polarization property of light, it is achieved that the carrier and the first order sidebands are in two orthogonal polarization directions. Then, the phase shift is introduced to the carrier and the first order sidebands by adjusting the bias voltage of the polarization modulator. With the optical interference effect between the two orthogonal polarization lights in the fast and slow axes of the polarization maintaining fiber when they are in the same polarization state, a microwave photonic filter is achieved with negative coefficients or positive coefficients when the phase difference is 0 or 90. Finally, the frequency response of the filter with a frequency range between 0 GHz and 15 GHz is measured and verified.
- microwave photonic filter,
- positive coefficient,
- negative coefficient,
- polarization modulation,
- polarization mode interference,
- frequency response

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