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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 12 — Jun. 9, 2008
  • pp: 8769–8779

Optical microring resonators in fluorine-implanted lithium niobate

Aleksej Majkić, Manuel Koechlin, Gorazd Poberaj, and Peter Günter  »View Author Affiliations


Optics Express, Vol. 16, Issue 12, pp. 8769-8779 (2008)
http://dx.doi.org/10.1364/OE.16.008769


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Abstract

We report on the production and characterisation of optical microring resonators and optical channel waveguides by using fluorine-ion implantation and planar structuring in lithium niobate. We demonstrate the production of single-mode planar waveguides by low fluence fluorine-ion implantation (ϕ=2.5·1014 ions/cm2) into lithium niobate wafers. The waveguides are strongly confined by the amorphous 2-µm wide optical barrier induced by the implantation process. A refractive index contrast of Δno =0.17 at the telecom wavelength λ=1.5 µm has been determined between the waveguide and the barrier. Planar structuring with ridge height of up to 1.2 µm has been achieved by laser lithography masking and Ar+ sputtering. For TE waves, the channel waveguides exhibit propagation losses lower than 8 dB/cm. First ring resonators with 80-µm radius have been fabricated by planar structuring in fluorine-ion implanted lithium niobate. The measured resonance curves show an extinction ratio of 14 dB, a free spectral range of 2.0 nm and a finesse of 4.

© 2008 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(230.7380) Optical devices : Waveguides, channeled
(230.7390) Optical devices : Waveguides, planar
(250.7360) Optoelectronics : Waveguide modulators
(230.4555) Optical devices : Coupled resonators

ToC Category:
Optical Devices

History
Original Manuscript: April 11, 2008
Revised Manuscript: May 26, 2008
Manuscript Accepted: May 27, 2008
Published: May 30, 2008

Citation
Aleksej Majkic, Manuel Koechlin, Gorazd Poberaj, and Peter Günter, "Optical microring resonators in fluorineimplanted lithium niobate," Opt. Express 16, 8769-8779 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-12-8769


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