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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 22 — Nov. 15, 2013
  • pp: 4857–4860

Widely tunable single-bandpass microwave photonic filter based on polarization processing of a nonsliced broadband optical source

Hui Wang, Jian Yu Zheng, Wei Li, Li Xian Wang, Ming Li, Liang Xie, and Ning Hua Zhu  »View Author Affiliations


Optics Letters, Vol. 38, Issue 22, pp. 4857-4860 (2013)
http://dx.doi.org/10.1364/OL.38.004857


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Abstract

We propose a new scheme of microwave photonic filter (MPF) based on the polarization processing of a broadband optical source (BOS), which features single-bandpass response and a wide span of operation bandwidth. The BOS is orthogonally polarized by a polarization division multiplexing emulator (PDME) with a tunable time delay between the two polarization states and incident at ±45° to one principle axis of a polarization modulator (PolM). The PDME cascades a PolM, and a polarizer realizes a microwave modulation making the phase of the carrier able to be tuned while ±1st sidebands remain unchanged, which after propagating in a dispersive medium results in a tunable single-bandpass response in the RF domain. We experimentally verify the MPF. By adjusting the time delay and the optical spectrum bandwidth, the passband center frequency is continuously tuned from DC to 20 GHz and the 3 dB passband bandwidth changes while the optical spectrum bandwidth ranges from 1 to 4 nm.

© 2013 Optical Society of America

OCIS Codes
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(060.4510) Fiber optics and optical communications : Optical communications
(070.2615) Fourier optics and signal processing : Frequency filtering
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 23, 2013
Revised Manuscript: September 26, 2013
Manuscript Accepted: October 15, 2013
Published: November 14, 2013

Citation
Hui Wang, Jian Yu Zheng, Wei Li, Li Xian Wang, Ming Li, Liang Xie, and Ning Hua Zhu, "Widely tunable single-bandpass microwave photonic filter based on polarization processing of a nonsliced broadband optical source," Opt. Lett. 38, 4857-4860 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-22-4857

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