Title :
44-ns Continuously Tunable Dispersionless Optical Delay Element Using a PPLN Waveguide With Two-Pump Configuration, DCF, and a Dispersion Compensator
Author :
Wang, Yan ; Yu, Changyuan ; Yan, Lianshan ; Willner, Alan E. ; Roussev, Rostislav ; Langrock, Carsten ; Fejer, Martin M. ; Sharping, Jay E. ; Gaeta, Alexander L.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA
fDate :
6/1/2007 12:00:00 AM
Abstract :
This letter presents an optically controlled, continuously tunable, dispersionless optical delay element in fiber based on a selective wavelength converter using a periodically poled lithium-niobate waveguide with two-pump configuration, dispersion-compensated fiber, and a dispersion compensator. Optical phase information is preserved in this technique, and there is no fundamental limitation on pulsewidth or bit rate. A Continuous optical delay up to 44-ns is shown for 10-Gb/s nonreturn-to-zero applications, which is equal to a 440-bit slot
Keywords :
compensation; lithium compounds; optical communication equipment; optical delay lines; optical fibre communication; optical fibre dispersion; optical modulation; optical pumping; optical waveguides; optical wavelength conversion; 10 Gbit/s; 44 ns; DCF; LiNbO3; PPLN waveguide; dispersion compensator; dispersion-compensated fiber; nonreturn-to-zero modulation; optical delay element; periodically poled lithium-niobate waveguide; selective wavelength converter; Delay lines; Fiber nonlinear optics; Nonlinear optics; Optical buffering; Optical control; Optical fiber dispersion; Optical filters; Optical signal processing; Optical waveguides; Propagation delay; Nonlinear optics; optical delay lines; optical fiber communication; optical fiber dispersion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.895900
