Chinese Optics Letters, 2011, 9 (5): 051202, Published Online: Apr. 22, 2011  

Instantaneous frequency measurement based on transversal microwave filters with high resolution Download: 558次

Author Affiliations
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract
We propose a novel photonic technique for microwave frequency measurement based on transversal microwave filters with high resolution. Two parallel microwave filters with sine and cosine frequency responses are obtained by cross gain modulation in a single semiconductor optical amplifier, which introduces two different frequency responses to achieve an amplitude comparison function. We also demonstrate a proof-of-concept experiment. The measurement error is less than +-0.04 GHz for the first band range of 0-3.45 GHz and less than +-0.03 GHz for the second band range of 3.45-5.8 GHz. Our scheme is found to be capable of being extended for larger frequency range measurements using a shorter fiber length.

Jianji Dong, Yuan Yu, Xinliang Zhang, Dexiu Huang. Instantaneous frequency measurement based on transversal microwave filters with high resolution[J]. Chinese Optics Letters, 2011, 9(5): 051202.

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