Patent · US Active

Apparatus and method for monitoring in-band OSNR

US9742491B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS · CN

Inventors

Jifang Qiu · Beijing, CN
Bo Yuan · Lo Wu, CN
Jian Wu · Beijing, CN
Yan Li · Beijing, CN
Xiaobin HONG · 流花街道, CN
Hongxiang Guo · Nanhu, CN
Jintong Lin · Beijing, CN

Key dates

Filing date	Jun 1, 2015
Grant date	Aug 22, 2017
Priority date	—
Expiry date	Jun 1, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04B10/07953
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An apparatus and a method for monitoring in-band OSNR (Optical Signal-to-Noise Ratio) which monitors the in-band OSNR by using two parallel Mach-Zehnder-interferometers with different optical time delays are disclosed. The apparatus and method can be resistant to chromatic dispersion, polarization mode dispersion and polarized noise, can measure the coherence characteristics of the signal without removing the noise, and can be manufactured into a semiconductor integrated device and be applied in the future high-speed optical network.

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