Patent · US Active

Optical switch

US8699832B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignees

NIPPON TELEGRAPH AND TELEPHONE CORPORATION · JP
NTT Electronics Corporation · JP

Inventors

Nobuaki Matsuura · Tokyo, JP
Koichi Hadama · Atsugi, JP
Etsu Hashimoto · Yokohama, JP
Yuzo Ishii · Tokyo, JP
Mitsuo Usui · Yokohama, JP
Tohru Matsuura · Yokohama, JP
Toshiki Nishizawa · Yokohama, JP
Yuji Mitsuhashi · Tokyo, JP

Key dates

Filing date	Mar 29, 2010
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Aug 24, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/356
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A light-shielding portion (10) shields the light spot of output light output toward a shunt position α by a projecting portion (12). Hence, the output light output toward the shunt position α does not travel to an output port (111). This allows to prevent crosstalk.

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