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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 14 — May. 10, 2009
  • pp: 2697–2701

Dual-function beam splitter of a subwavelength fused-silica grating

Jijun Feng, Changhe Zhou, Jiangjun Zheng, Hongchao Cao, and Peng Lv  »View Author Affiliations


Applied Optics, Vol. 48, Issue 14, pp. 2697-2701 (2009)
http://dx.doi.org/10.1364/AO.48.002697


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Abstract

We present the design and fabrication of a novel dual-function subwavelength fused-silica grating that can be used as a polarization-selective beam splitter. For TM polarization, the grating can be used as a two-port beam splitter at a wavelength of 1550 ‚ÄČ nm with a total diffraction efficiency of 98%. For TE polarization, the grating can function as a high-efficiency grating, and the diffraction efficiency of the -1st order is 95% under Littrow mounting. This dual-function grating design is based on a simplified modal method. By using the rigorous coupled-wave analysis, the optimum grating parameters can be determined. Holographic recording technology and inductively coupled plasma etching are used to manufacture the fused-silica grating. Experimental results are in agreement with the theoretical values.

© 2009 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.4510) Fiber optics and optical communications : Optical communications
(230.1360) Optical devices : Beam splitters
(230.5440) Optical devices : Polarization-selective devices
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

History
Original Manuscript: January 2, 2009
Revised Manuscript: March 30, 2009
Manuscript Accepted: April 11, 2009
Published: May 6, 2009

Citation
Jijun Feng, Changhe Zhou, Jiangjun Zheng, Hongchao Cao, and Peng Lv, "Dual-function beam splitter of a subwavelength fused-silica grating," Appl. Opt. 48, 2697-2701 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-14-2697

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