Patent · US Expired

Liquid overclad-encapsulated optical device

US6587626B2 · kind B2 · utility

7Cited by
5References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 16, 2001
Grant dateJul 1, 2003
Priority date—
Expiry dateJan 16, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B2006/0325
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical device includes a planar substrate (10) on top of which is deposited a layer of waveguide material (402). A waveguide circuit (404) is etched into the waveguide material (402). A cover (426) selectively encapsulates the substrate (10) around the waveguide circuit (404) while leaving space to provide a gap above the waveguide circuit (404). A liquid material (30) having a lower index of refraction than the waveguide material is filled into the gap above the waveguide circuit (404) such that the liquid acts as an overclad for the waveguide circuit (404).

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