Extended optical fiber line testing system using new eight-channel L/U-band crossed optical waveguide coupler for L-band WDM transmission

被引：10

作者：

Araki, N ^{[1
]}

Izumita, H ^{[1
]}

Honda, N ^{[1
]}

Nakamura, M ^{[1
]}

机构：

[1] NTT Corp, NTT Access Network Serv Syst Lab, Tsukuba, Ibaraki 3050805, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2003年 / 21卷 / 12期

关键词：

maintenance; optical couplers; optical fiber testing; optical filters; optical time-domain reflectometry (OTDR); optical waveguide components; wavelength-division multiplexing (WDM);

D O I：

10.1109/JLT.2003.821761

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：

This paper describes the system design for an extended optical fiber line testing system that uses a new L/U-band crossed optical waveguide coupler and a fiber Bragg grating filter for L-band wavelength-division multiplexing transmission. We describe the reflection characteristic required for optical filters located in central offices in order to suppress the ghost signal caused by multireflection in the optical time-domain reflectometry (OTDR) trace. We design and evaluate an eight-channel crossed optical waveguide coupler with a new thin dielectric film filter that separates a 1650-nm test light from the L-band communication light, and confirm that there was no degradation caused by multireflections in the OTDR trace. We also demonstrate the in-service line monitoring of a 10-Gb/s L-band transmission with no degradation in the transmission quality.

引用

页码：3316 / 3322

页数：7

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