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1. (US20160013863) Apparatus for monitoring optical signal to noise ratio, transmitter and communication system

المكتب : الولايات المتحدة الأمريكية
رقم الطلب: 14794115 تاريخ الطلب: 08.07.2015
رقم النشر: 20160013863 تاريخ النشر: 14.01.2016
رقم التسليم: 09698904 تاريخ التسليم: 04.07.2017
نوع النشر: B2
التصنيف الدولي للبراءات:
H04B 17/00
H04B 10/079
H04B 10/077
H04J 14/06
H04B 10/556
Description not available in lang arDescription not available in lang arDescription not available in lang arDescription not available in lang arDescription not available in lang ar
المتقدمون: FUJITSU LIMITED
المخترعون: Liang Dou
Zhenning Tao
الوكلاء: Staas & Halsey LLP
بيانات الأولوية: 2014 1 0325415 09.07.2014 CN
العنوان: (EN) Apparatus for monitoring optical signal to noise ratio, transmitter and communication system
الملخص: front page image
(EN)

Embodiments provide an apparatus for monitoring an optical signal to noise ratio (OSNR), a transmitter and a communication system. The apparatus for monitoring optical signal to noise ratio includes: a signal extracting unit and a signal processing unit. The signal extracting unit is configured to extract pilot signals and non-pilot signals at two polarization states from received signals, frequencies of the pilot signals at the two polarization states being different, and the polarization states being differentiated by the frequencies of the pilot signals; and the signal processing unit is configured to obtain OSNRs at the two polarization states by using the pilot signals and the non-pilot signals extracted by the signal extracting unit. With the embodiments of the present disclosure, by making the frequencies of the pilot signals at different polarization states be different, OSNRs at different polarization states may be obtained more accurately.