title: Variable single-passband narrowband optical filter based on forward stimulated interpolarization scattering in photonic crystal fiber.
abstract: A variable transmission spectrum single-passband narrowband optical filter is proposed and experimentally demonstrated. It is based on forward stimulated interpolarization scattering (SIPS) in a photonic crystal fiber by applying a differential quadrature phase-shift keying modulation to the pump wave to broaden and shape the SIPS gain spectrum. By choosing the bit rate of the modulation data pattern, a flat-top steep-cutoff optical bandpass filter with a 3 dB bandwidth of 70 MHz and a 10 dB bandwidth of 90 MHz is realized. In addition, a variable narrowband optical notch filter is also realized by attenuation of the pump wave.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Qin
authors.forename: Junqiang
authors.initials: J
authors.lastname: Sun
authors.forename: Mingdi
authors.initials: M
authors.lastname: Du
authors.forename: Jianfei
authors.initials: J
authors.lastname: Liao