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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 17 — Sep. 1, 2013
  • pp: 3448–3451

Terahertz bandwidth photonic Hilbert transformers based on synthesized planar Bragg grating fabrication

Chaotan Sima, J. C. Gates, C. Holmes, P. L. Mennea, M. N. Zervas, and P. G. R. Smith  »View Author Affiliations


Optics Letters, Vol. 38, Issue 17, pp. 3448-3451 (2013)
http://dx.doi.org/10.1364/OL.38.003448


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Abstract

Terahertz bandwidth photonic Hilbert transformers are proposed and experimentally demonstrated. The integrated device is fabricated via a direct UV grating writing technique in a silica-on-silicon platform. The photonic Hilbert transformer operates at bandwidths of up to 2 THz (16nm) in the telecom band, a 10-fold greater bandwidth than any previously reported experimental approaches. Achieving this performance requires detailed knowledge of the system transfer function of the direct UV grating writing technique; this allows improved linearity and yields terahertz bandwidth Bragg gratings with improved spectral quality. By incorporating a flat-top reflector and Hilbert grating with a waveguide coupler, an ultrawideband all-optical single-sideband filter is demonstrated.

© 2013 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.1480) Optical devices : Bragg reflectors
(320.7085) Ultrafast optics : Ultrafast information processing
(070.7145) Fourier optics and signal processing : Ultrafast processing

ToC Category:
Ultrafast Optics

History
Original Manuscript: July 11, 2013
Revised Manuscript: August 1, 2013
Manuscript Accepted: August 6, 2013
Published: August 29, 2013

Citation
Chaotan Sima, J. C. Gates, C. Holmes, P. L. Mennea, M. N. Zervas, and P. G. R. Smith, "Terahertz bandwidth photonic Hilbert transformers based on synthesized planar Bragg grating fabrication," Opt. Lett. 38, 3448-3451 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-17-3448


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