Patent · US Active

Composite optical waveguide, variable-wavelength laser, and method of oscillating laser

US8494023B2 · kind B2 · utility

1Cited by

2References

14Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Hiroyuki Yamazaki · Yokohama, JP
Hirohito Yamada · Tokyo, JP

Key dates

Filing date	Jan 28, 2011
Grant date	Jul 23, 2013
Priority date	—
Expiry date	Apr 22, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/0654
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A composite optical waveguide 1 includes a first optical waveguide 9 comprising a silica-based core and a second optical waveguide 11 comprising an Si-based core. The second optical waveguide 11 is joined to the first optical waveguide 9. The length of the first optical waveguide 9 corresponds to a permissible propagation loss of the second optical waveguide 11. The second optical waveguide 11 includes a sharply curved portion 13 having a radius smaller than the minimum bend radius of the first optical waveguide 9.

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