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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 31 — Nov. 1, 2009
  • pp: G125–G130

Fabrication and characterization of straight and compact S-bend optical waveguides on a silicon-on-insulator platform

Rupesh Kumar Navalakhe, Nandita DasGupta, and Bijoy Krishna Das  »View Author Affiliations


Applied Optics, Vol. 48, Issue 31, pp. G125-G130 (2009)
http://dx.doi.org/10.1364/AO.48.00G125


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Abstract

Straight and S-bend rib waveguide structures with a novel design have been fabricated and characterized on a silicon-on-insulator (SOI) platform. For a typical straight rib waveguide, the single-mode waveguide at λ 1550 nm has been verified by measuring the near-field output with an IR camera, and a nearly polarization-independent mode size is found to be 10 μm × 4.5 μm . The waveguide loss has been estimated from low-finesse Fabry–Perot transmission characteristics, and a typical value of 0.5 dB / cm is obtained. It is also shown experimentally that the bending radius of an asymmetrically etched S-bend waveguide can be ten times smaller than that of conventional symmetrically etched S-bend waveguides for similar optical losses. These bend waveguides (bending radii of 1500 μm ) are found to be low loss ( < 2.5 dB ) and nearly polarization independent.

© 2009 Optical Society of America

OCIS Codes
(040.6040) Detectors : Silicon
(130.0130) Integrated optics : Integrated optics
(230.7370) Optical devices : Waveguides
(250.0250) Optoelectronics : Optoelectronics

History
Original Manuscript: June 5, 2009
Revised Manuscript: October 8, 2009
Manuscript Accepted: October 12, 2009
Published: October 23, 2009

Citation
Rupesh Kumar Navalakhe, Nandita DasGupta, and Bijoy Krishna Das, "Fabrication and characterization of straight and compact S-bend optical waveguides on a silicon-on-insulator platform," Appl. Opt. 48, G125-G130 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-31-G125


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