Three-Dimensional Chirped High-Contrast Grating Hollow-Core Waveguide

Yang Yue; Lin Zhang; Xue Wang; Hao Huang; Weijian Yang; James Ferrara; Vadim Karagodsky; Christopher Chase; Moshe Tur; Connie J. Chang-Hasnain; Alan E. Willner

doi:10.1109/JPHOT.2012.2210279

IEEE Photonics Journal (Jan 2012)

Three-Dimensional Chirped High-Contrast Grating Hollow-Core Waveguide

Yang Yue,
Lin Zhang,
Xue Wang,
Hao Huang,
Weijian Yang,
James Ferrara,
Vadim Karagodsky,
Christopher Chase,
Moshe Tur,
Connie J. Chang-Hasnain,
Alan E. Willner

Affiliations

Yang Yue: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula>Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA
Lin Zhang: Department of Electrical Engineering, University of Southern California, Los Angeles, CA , USA
Xue Wang: Department of Electrical Engineering , University of Southern California, Los Angeles, CA, USA
Hao Huang: Department of Electrical Engineering, University of Southern California, Los Angeles, CA , USA
Weijian Yang: <formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex></formula>Department of Electrical Engineering and Computer Sciences , University of California, Berkeley, CA, USA
James Ferrara: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA
Vadim Karagodsky: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA
Christopher Chase: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA
Moshe Tur: <formula formulatype="inline"><tex Notation="TeX">$^{3}$</tex></formula>School of Electrical Engineering, Tel Aviv University, Ramat Aviv, Israel
Connie J. Chang-Hasnain: Department of Electrical Engineering and Computer Sciences, University of California , Berkeley, CA, USA
Alan E. Willner: Department of Electrical Engineering, University of Southern California, Los Angeles, CA , USA

DOI: https://doi.org/10.1109/JPHOT.2012.2210279
Journal volume & issue: Vol. 4, no. 5
pp. 1372 – 1380

Abstract

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A 3-D chirped high-contrast grating hollow-core waveguide (HCG-HW) exhibits highly efficient 2-D (transverse and lateral) light confinement. Compared with step-index ones, laterally chirped HCG-HWs (graded index) can pronouncedly reduce the propagation loss (>; 10×) without compromising the lateral index contrast. Simulation results show that a propagation loss as low as 0.04 dB/cm can be achieved. For a chirped HCG-HW with a 6-μm core height, it exhibits 30and 141-nm spectral widths for 0.1and 1-dB/cm loss requirements. The chirped HCG-HW also shows an ultralow nonlinear coefficient, which is on the order of 10-5 /W/m.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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