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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 11 — Jun. 1, 2010
  • pp: 1834–1836

Highly compact polarization-independent grating coupler

Shiqian Shao and Yi Wang  »View Author Affiliations


Optics Letters, Vol. 35, Issue 11, pp. 1834-1836 (2010)
http://dx.doi.org/10.1364/OL.35.001834


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Abstract

We propose a compact polarization-independent output grating coupler, which consists of T-shaped grooves. For only 20 periods on a silicon-on-insulator wafer with a 260 nm thick top silicon layer, the output coupling efficiencies for both the TE and the TM modes are larger than 50% in the wavelength range of 1480– 1580 nm and are approximately 58% around 1550 nm . The polarization-dependent loss of the device is within 0.05 dB in the range of 1510 1580 nm .

© 2010 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.1950) Optical devices : Diffraction gratings

ToC Category:
Optical Devices

History
Original Manuscript: March 17, 2010
Revised Manuscript: May 5, 2010
Manuscript Accepted: May 6, 2010
Published: May 24, 2010

Citation
Shiqian Shao and Yi Wang, "Highly compact polarization-independent grating coupler," Opt. Lett. 35, 1834-1836 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-11-1834


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