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:
Aug. 15, 2006
Filed:
Oct. 05, 2000
Richard P. Schneider, Mountain View, CA (US);
Frank H. Peters, San Jose, CA (US);
An-nien Cheng, San Jose, CA (US);
Laura Giovane, San Francisco, CA (US);
Hao-chung Kuo, San Jose, CA (US);
Sheila K. Mathis, Sunnyvale, CA (US);
Richard P. Schneider, Mountain View, CA (US);
Frank H. Peters, San Jose, CA (US);
An-Nien Cheng, San Jose, CA (US);
Laura Giovane, San Francisco, CA (US);
Hao-chung Kuo, San Jose, CA (US);
Sheila K. Mathis, Sunnyvale, CA (US);
Abstract
Using lateral physical modulation, the optical properties of VCSELs can be stabilized and controlled by spatially varying the characteristics of the device material. This results in stabilization of the linewidth, the numerical aperture, the near and far field, as a function of bias and temperature. A VCSEL includes a substrate, an active region sandwiched between an upper and lower distributed Bragg reflector (DBRs), and electrical contacts. A light emission property e.g. the index of refraction, may be varied by patterning or texturing the surface of the substrate prior to growth of the epitaxial DBR layers or at least one layer of either the upper or lower DBRs, or by inserting a non-planar layer.