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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15747–15754

Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation

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

Optics Express, Vol. 21, Issue 13, pp. 15747-15754 (2013)

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A direct UV grating writing technique based on phase-controlled interferometry is proposed and demonstrated in a silica-on-silicon platform, with a wider wavelength detuning range than any previously reported UV writing technology. Electro-optic phase modulation of one beam in the interferometer is used to manipulate the fringe pattern and thus control the parameters of the Bragg gratings and waveguides. Various grating structures with refractive index apodization, phase shifts and index contrasts of up to 0.8 × 10−3have been demonstrated. The method offers significant time/energy efficiency as well as simplified optical layout and fabrication process. We have shown Bragg gratings can be made from 1200nm to 1900nm exclusively under software control and the maximum peak grating reflectivity only decreases by 3dBover a 250 nm (~32THz) bandwidth.

© 2013 OSA

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(130.0130) Integrated optics : Integrated optics
(220.1230) Optical design and fabrication : Apodization
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Integrated Optics

Original Manuscript: May 2, 2013
Revised Manuscript: June 12, 2013
Manuscript Accepted: June 13, 2013
Published: June 24, 2013

C. Sima, J. C. Gates, H. L. Rogers, P.L. Mennea, C. Holmes, M. N. Zervas, and P. G. R. Smith, "Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation," Opt. Express 21, 15747-15754 (2013)

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