OSNR monitoring method for OOK and DPSK based on optical delay interferometer

被引：70

作者：

Liu, X.

Kao, Y.-H.

Chandrasekhar, S.

Kang, I.

Cabot, S.

Buhl, L. L.

机构：

[1] Bell Labs, Holmdel, NJ 07733 USA

[2] Opt Networking Grp, Holmdel, NJ 07733 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 13-16期

关键词：

differential phase-shift keying (DPSK); optical delay interferometer (ODI); optical signal-to-noise ratio (OSNR); performance monitoring;

D O I：

10.1109/LPT.2007.901586

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We describe a simple method to measure the optical signal-to-noise ratio (OSNR) of on-off-keying (OOK) and differential phase-shift-keying (DPSK) signals by using an optical delay interferometer (ODI) having a sinusoidal and tunable passband. This OSNR monitoring method is independent, of chromatic dispersion, polarization-mode dispersion, and noise polarization. We show experimentally that accurate OSNR measurements are made for a 10-Gb/s OOK signal by using a 1-bit ODI and a 40-Gb/s DPSK signal by using a partial-bit ODI with the OSNR ranging from 5 to 25 dB.

引用

页码：1172 / 1174

页数：3

共 10 条

[1] PMD-insensitive OSNR monitoring based on polarization-nulling with off-center narrow-band filtering [J].