Title :
Pilot-tone-based WDM monitoring technique for DPSK systems
Author :
Jun, S.B. ; Kim, Hoon ; Park, Paul K J ; Lee, J.H. ; Chung, Y.C.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
To evaluate the effectiveness of the pilot-tone-based monitoring technique in differential phase-shift keying (DPSK) systems, we measure the mutual interactions between the pilot tones and DPSK signals and compare the results with those of on-off keying (OOK) signals. The results show that, by using the DPSK format instead of OOK, it is possible to increase the number of wavelength-division-multiplexed channels that can be monitored simultaneously by using pilot tones without using optical demultiplexers by more than one hundred times
Keywords :
differential phase shift keying; optical fibre communication; optical modulation; telecommunication channels; wavelength division multiplexing; DPSK; OOK; WDM; differential phase-shift keying; on-off keying signal; optical demultiplexers; pilot tones; wavelength division multiplexing; All-optical networks; Condition monitoring; Differential phase shift keying; Differential quadrature phase shift keying; Distributed feedback devices; Optical crosstalk; Optical filters; Optical receivers; Optical sensors; Wavelength division multiplexing; Differential phase-shift keying (DPSK); optical performance monitoring; pilot tone;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.884237
