Title :
Automatic tunable chromatic dispersion compensation at 40 gb/s in ASK and DPSK, NRZ, and CSRZ 263-km transmission experiments
Author :
Sandel, D. ; Bhandare, S. ; Abas, A.F. ; Milivojevic, B. ; Noé, R. ; Guy, Martin ; Lapointe, Martin
Author_Institution :
Dept. of Opt. Commun. & High Frequency Eng., Univ. of Paderborn, Germany
Abstract :
Chromatic dispersion (CD) in single-mode optical fiber distorts pulses and is a big obstacle for the installation of long-haul dynamically routed transmission systems, especially at 40 Gb/s. Here the automatic residual CD compensation of a 263-km fiber link in the range -300 to -700 ps/nm is demonstrated for nonreturn-to-zero amplitude-shift keying (NRZ-ASK), carrier-suppressed return-to-zero (CSRZ)-ASK, NRZ differential phase-shift keying (DPSK), and CSRZ-DPSK modulation formats at 40 Gb/s. A thermally tunable dispersion compensator minimizes residual CD, which is measured by a synchronous arrival time detection scheme. The measured transmission penalty with online CD compensation is between ±1.2 dB for various link lengths and compensated CD values.
Keywords :
amplitude shift keying; compensation; differential phase shift keying; optical communication equipment; optical fibre communication; optical fibre dispersion; optical modulation; optical tuning; 263 km; 40 Gbit/s; ASK; CSRZ; CSRZ-DPSK; DPSK; NRZ; automatic tunable chromatic dispersion compensation; carrier-suppressed return-to-zero amplitude-shift keying; differential phase-shift keying; modulation formats; nonreturn-to-zero amplitude-shift keying; synchronous arrival time detection; thermally tunable dispersion compensator; transmission penalty; Amplitude shift keying; Chromatic dispersion; Differential phase shift keying; Differential quadrature phase shift keying; Modulation; Optical distortion; Optical fiber dispersion; Optical fibers; Optical pulses; Optical signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.834889
