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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 14 — Jul. 15, 2013
  • pp: 16621–16628

Tunable broadband light coupler based on two parallel all-fiber acousto-optic tunable filters

Wending Zhang, Ligang Huang, Feng Gao, Fang Bo, Guoquan Zhang, and Jingjun Xu  »View Author Affiliations

Optics Express, Vol. 21, Issue 14, pp. 16621-16628 (2013)

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Based on the evanescent-field coupling between the cladding modes of two adjacent and parallel all-fiber acousto-optic tunable filters, tunable broadband light coupling with relatively uniform insertion loss of trapping spectrum was achieved. In the experiments, a wide spectral tuning range from 1490 nm to 1610 nm, covering the whole C- and L-band and parts of S-bands, was demonstrated with a wavelength tunability slope of −0.72 nm/kHz. The insertion loss of the trapping spectrum was uniform (around −5.0 dB, which can be improved with a longer evanescent-field coupling length) within the whole tuning spectral range. Such a light coupling structure would be useful in tunable broadband light coupler and broadband optical fiber add/drop multiplexer for applications in coarse wavelength division multiplexing systems.

© 2013 osa

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2430) Fiber optics and optical communications : Fibers, single-mode

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 23, 2013
Manuscript Accepted: June 16, 2013
Published: July 2, 2013

Wending Zhang, Ligang Huang, Feng Gao, Fang Bo, Guoquan Zhang, and Jingjun Xu, "Tunable broadband light coupler based on two parallel all-fiber acousto-optic tunable filters," Opt. Express 21, 16621-16628 (2013)

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