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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 2 — Jan. 10, 2006
  • pp: 288–296

Optimization of compact lateral, vertical, and combined tapered spot-size converters by use of the beam-propagation method

Shyqyri Haxha, Emmanuel O. Ladely, Majlinda Mjeku, Fathi AbdelMalek, and B. M. Azizur Rahman  »View Author Affiliations

Applied Optics, Vol. 45, Issue 2, pp. 288-296 (2006)

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A study of lateral, vertical, and combined spot-size converters is presented that employs full-vectorial numerical techniques such as modal solution and beam propagation based on the finite-element method. Spot-size expansion, coupling efficiency to an optical fiber, the mode-beating phenomenon, and transmission losses are demonstrated for all three spot-size-converter designs. Optimization of the device fabrication parameters is also reported. A significant improvement in the coupling efficiency and reduction of the device length are achieved when the length and the width are changed simultaneously.

© 2006 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(130.1750) Integrated optics : Components
(130.3120) Integrated optics : Integrated optics devices
(230.7020) Optical devices : Traveling-wave devices

ToC Category:
Integrated Optics

Original Manuscript: May 13, 2005
Revised Manuscript: September 5, 2005
Manuscript Accepted: September 11, 2005

Shyqyri Haxha, Emmanuel O. Ladely, Majlinda Mjeku, Fathi AbdelMalek, and B. M. Azizur Rahman, "Optimization of compact lateral, vertical, and combined tapered spot-size converters by use of the beam-propagation method," Appl. Opt. 45, 288-296 (2006)

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