Patent · US Active

Deep-shallow optical radiation filters

US8948553B2 · kind B2 · utility

4Cited by

8References

14Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Dirk Taillaert · Bredene, BE
Joost Brouckaert · Kortrijk, BE

Key dates

Filing date	Jul 16, 2012
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Jan 18, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG02B2006/12147
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical coupler for processing radiation is described. The optical coupler comprises a first deep-shallow waveguide and a second deep-shallow waveguide for guiding radiation in a propagation direction. Each of the deep-shallow waveguides is a waveguide comprising a shallow etched portion and an unetched portion having a width substantially constant along the propagation direction. The width of the shallow etched portion is substantially larger than the width of the unetched portion. The shallow etched portion of the first deep-shallow waveguide and the shallow etched portion of the second deep-shallow waveguide are arranged sufficiently close for coupling radiation from the first deep-shallow waveguide to the second deep-shallow waveguide.

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