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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 10 — May. 15, 2014
  • pp: 2967–2970

Sub-MHz ultrahigh-resolution optical spectrometry based on Brillouin dynamic gratings

Yongkang Dong, Taofei Jiang, Lei Teng, Hongying Zhang, Liang Chen, Xiaoyi Bao, and Zhiwei Lu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 10, pp. 2967-2970 (2014)
http://dx.doi.org/10.1364/OL.39.002967


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Abstract

We propose and demonstrate an ultrahigh-resolution optical spectrometry based on Brillouin dynamic gratings (BDGs). Taking advantage of creating a long grating in an optical fiber, an ultra-narrow bandwidth optical filter is realized by operating a BDG in a long single-mode fiber (SMF), and the optical spectrometry is performed by sweeping the center wavelength of the BDG-based filter through a swept-tuned laser. The BDG-based optical spectrometry features ultrahigh resolution, large wavelength coverage, and a simple direction-detection scheme. In the experiment, a 4 fm (0.5 MHz) spectral resolution is achieved by operating a BDG in a 400 m SMF, and the wavelength coverage can be readily extended to C+L bands with a commercial tunable laser.

© 2014 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin

ToC Category:
Nonlinear Optics

History
Original Manuscript: March 19, 2014
Revised Manuscript: April 10, 2014
Manuscript Accepted: April 15, 2014
Published: May 12, 2014

Citation
Yongkang Dong, Taofei Jiang, Lei Teng, Hongying Zhang, Liang Chen, Xiaoyi Bao, and Zhiwei Lu, "Sub-MHz ultrahigh-resolution optical spectrometry based on Brillouin dynamic gratings," Opt. Lett. 39, 2967-2970 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-10-2967

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