Continuously tunable microwave photonic filter with multiwavelength optical source

Huijuan Li; Zhengrong Tong; Weihua Zhang; Dong Xu

doi:10.1117/1.OE.57.1.017104

4 January 2018 Continuously tunable microwave photonic filter with multiwavelength optical source

Huijuan Li, Zhengrong Tong, Weihua Zhang, Dong Xu

Author Affiliations +

Optical Engineering, Vol. 57, Issue 1, 017104 (January 2018). https://doi.org/10.1117/1.OE.57.1.017104

Abstract

A continuously tunable microwave photonic filter (MPF) with a multiwavelength optical source is proposed and demonstrated. The proposed MPF is based on a broadband optical source (BOS) and a waveshaper, which serves as a programmable slicing optical filter. By programming the waveshaper, a 50-channel stable and flat optical source is realized experimentally. The amplitude and phase of the optical carriers and phase modulation sidebands are then controlled via a Fourier-domain optical processor (FD-OP); phase modulation is changed to single sideband modulation. This filter could also be switched from bandpass to notch filter by controlling FD-OP. As simulation results, the center frequency of the bandpass filter is tuned continuously from 0 to 37.244 GHz in the entire free spectral range (FSR) and this notch filter based on 50 taps has the ability of realizing a narrow-notch, flat-passband, and large FSR response.

Citation Download Citation

Huijuan Li, Zhengrong Tong, Weihua Zhang, and Dong Xu "Continuously tunable microwave photonic filter with multiwavelength optical source," Optical Engineering 57(1), 017104 (4 January 2018). https://doi.org/10.1117/1.OE.57.1.017104

Received: 17 September 2017; Accepted: 5 December 2017; Published: 4 January 2018

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