The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2013
Filed:
May. 17, 2011
Connie Chang-hasnain, Palo Alto, CA (US);
YE Zhou, Shanghai, CN;
Vadim Karagodsky, Berkeley, CA (US);
Forrest G. Sedgwick, Berkeley, CA (US);
Michael Chung-yi Huang, Taipei, TW;
Connie Chang-Hasnain, Palo Alto, CA (US);
Ye Zhou, Shanghai, CN;
Vadim Karagodsky, Berkeley, CA (US);
Forrest G. Sedgwick, Berkeley, CA (US);
Michael Chung-Yi Huang, Taipei, TW;
The Regents of the University of California, Oakland, CA (US);
Abstract
Optical waveguides using segmented periodically-spaced high contrast gratings bounding a hollow core propagation region on at least two sides. Incident light is received in a hollow waveguide (HW) region (core) between opposing HCG faces which provide lateral confinement in response to glancing reflections of the incident light beam from high refractive index segments of the HCG as it traverses the core. Embodiments are described for planar waveguides (1D) having a planar core between two planar HCGs, as well as 2D waveguides, such as having rectangular segments of the HCG through which light is propagated. Additionally, other configurations of HCG-HW, including those having arbitrary incidence and azimuth, angled HCG segments, propagation in a direction which is transverse, or alternatively parallel, to the segments of the HCG.