Title :
In-service OTDR-monitoring-supported fiber-Bragg-grating optical add-drop multiplexers
Author :
Kuo, I-Yu ; Chen, Yung-Kuang
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
fDate :
6/1/2002 12:00:00 AM
Abstract :
Two optical time-domain reflectometer (OTDR)-monitoring-supported fiber-Bragg-grating optical add-drop multiplexer (OADM) structures for in-service fault-location monitoring by using a conventional OTDR are demonstrated. Negligible system power penalty, due to the OTDR monitoring, of both structures in 10-Gb/s dense wavelength-division-multiplexing (DWDM) link is achieved. We find that the multiport-optical-circulator-based structure is superior to the wavelength-division-multiplexing structure to have compact structure, fewer components required, and potentially low cost. Such OADMs may find important applications in DWDM networks to implement a centralized automated in-service surveillance system to enhance system reliability.
Keywords :
Bragg gratings; multiplexing equipment; optical circulators; optical fibre networks; optical fibre testing; optical time-domain reflectometry; surveillance; telecommunication network reliability; wavelength division multiplexing; 10 Gbit/s; DWDM networks; OADM structures; OTDR-monitoring-supported fiber-Bragg-grating optical add-drop multiplexers; centralized automated in-service surveillance system; compact structure; conventional OTDR; dense wavelength-division-multiplexing link; fewer components; in-service fault-location monitoring; low cost; multiport-optical-circulator-based structure; optical time-domain reflectometer; power penalty; system reliability; Bragg gratings; Circulators; Fiber gratings; Monitoring; Optical add-drop multiplexers; Optical fibers; Optical pulses; Optical transmitters; Time domain analysis; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1003120
