Patent · US Active

Optical element and method for manufacturing the same

US8494320B2 · kind B2 · utility

2Cited by
9References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 12, 2011
Grant dateJul 23, 2013
Priority date—
Expiry dateJan 23, 2032

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01S5/34306
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical device includes: an optical waveguide; and a plurality of diffraction grating layers, provided along the optical waveguide, each including a diffraction grating defined by a discontinuous first semiconductor layer and a second semiconductor layer having a refractive index different from a refractive index of the first semiconductor layer and burying the first semiconductor layer, one diffraction grating layer of the plurality of diffraction grating layers including a third semiconductor layer being continuous with the diffraction grating and made from a material different from materials of the first and the second semiconductor layers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.