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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 25 — Sep. 1, 2000
  • pp: 4490–4500

Optical coupling method utilizing a lensed fiber integrated with a long-period fiber grating

Wen Tzung Chen and Lon A. Wang  »View Author Affiliations


Applied Optics, Vol. 39, Issue 25, pp. 4490-4500 (2000)
http://dx.doi.org/10.1364/AO.39.004490


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Abstract

A novel optical coupling scheme that uses a lensed fiber integrated with a long-period fiber grating (LPFG) is proposed. Two experiments are performed to demonstrate the validity of such a scheme in single-mode-fiber–single-mode-fiber (SMF-to-SMF) and laser-diode–single-mode-fiber (LD-to-SMF) coupling setups. The measured results show that for an appropriate lens radius the addition of a LPFG will lead to a higher coupling efficiency over a longer range of working distance than without the LPFG. Coupling efficiencies of ∼78% and 35% are achieved for corresponding working distances of ∼250 and 110 µm, 1-dB longitudinal tolerances of ∼40 and 26 µm, and 1-dB transverse tolerances of ∼7.6 and 2.6 µm for SMF-to-SMF and LD-to-SMF, respectively.

© 2000 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2310) Fiber optics and optical communications : Fiber optics

History
Original Manuscript: January 14, 2000
Published: September 1, 2000

Citation
Wen Tzung Chen and Lon A. Wang, "Optical coupling method utilizing a lensed fiber integrated with a long-period fiber grating," Appl. Opt. 39, 4490-4500 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-25-4490

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