Design of nano-groove photonic crystal cavities in lithium niobate

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2902-2905
Journal / PublicationOptics Letters
Volume40
Issue number12
Online published1 Jun 2015
Publication statusPublished - 15 Jun 2015
Externally publishedYes

Abstract

We propose a novel design of photonic-crystal nanobeam cavities in lithium niobate (LN) for both TE and TM modes, addressing problems associated with tilted sidewalls, which commonly result from dry etching. Using optimized periodical nano-groove structures, the proposed devices could achieve quality factors as high as 3.9 × 106 with a modal volume of 5.0 (λ / n)3. We also show that such a design is promising for applications in nonlinear optics by theoretically predicting the efficiencies for electro-optic modulation and second-harmonic generation. The proposed nano-groove structures and design rules could also be applied for other material platforms that possess tilted sidewalls.

Research Area(s)

  • Photonic crystals, Resonators, Nonlinear optics, integrated optics, Modulation

Citation Format(s)

Design of nano-groove photonic crystal cavities in lithium niobate. / LI, Yihang; WANG, Cheng; LONCAR, Marko.

In: Optics Letters, Vol. 40, No. 12, 15.06.2015, p. 2902-2905.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal