Title :
Loss-less bridging in 1+1 optical protection using a modified transmitter and receiver
Author :
Levy, David S. ; Solomon, Kevin ; Korotky, Steven K.
Author_Institution :
Lucent Technol. Inc., Holmdel, NJ, USA
fDate :
3/1/2003 12:00:00 AM
Abstract :
Traditional 1+1 optical layer protection is implemented by creating two signals from one via a 3-dB splitter (with /spl sim/3-dB insertion loss) and transmitting both signals along two different path-diverse optical fibers. In this letter, a transmitter has been modified to provide two signals in such a manner that no excess insertion loss is encountered. Optical protection switching using this transmitter and a modified invertible receiver is demonstrated under 10-Gb/s nonreturn-to-zero transmission. A protection time of 5 ms is obtained.
Keywords :
optical fibre losses; optical fibre networks; optical receivers; optical transmitters; synchronous digital hierarchy; telecommunication network reliability; telecommunication signalling; 1+1 optical protection; 10 Gbit/s; 3 dB; 3-dB splitter; 5 ms; excess insertion loss; insertion loss; loss-less bridging; modified invertible receiver; modified optical transmitter; nonreturn-to-zero transmission; optical layer protection; optical protection switching; optical receiver; path-diverse optical fibers; protection time; synchronous digital hierarchy; synchronous optical network; High speed optical techniques; Insertion loss; Optical devices; Optical losses; Optical modulation; Optical receivers; Optical transmitters; Propagation losses; Protection; SONET;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.807951
