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
射频光子学 光学工具设计 超快测量 半导体光放大器 120.4570 Optical design of instruments 060.5625 Radio frequency photonics 320.7100 Ultrafast measurements 250.5980 Semiconductor optical amplifiers
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.