Title :
Demultiplexing of 80-Gb/s pulse-position modulated data with an ultrafast nonlinear interferometer
Author :
Robinson, B.S. ; Hamilton, S.A. ; Ippen, E.P.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
Pulse-position modulation may be used to reduce patterning effects arising from gain saturation in all-optical switches employing semiconductor optical amplifiers. We present a novel technique for return-to-zero pulse-position modulation of data suitable for use in optical time-division-multiplexed (OTDM) networks. We demonstrate two methods for all-optical demultiplexing of a pulse-position modulated data stream using an ultrafast nonlinear interferometer. Error-free operation is obtained for demultiplexing from OTDM data rates as high as 80 Gb/s with control pulse energies of 25 fJ.
Keywords :
demultiplexing; high-speed optical techniques; light interferometers; nonlinear optics; optical communication equipment; optical fibre networks; optical modulation; optical switches; pulse position modulation; semiconductor optical amplifiers; time division multiplexing; 25 fJ; 80 Gbit/s; OTDM data rates; OTDM networks; all-optical demultiplexing; all-optical switches; control pulse energies; demultiplexing; error-free operation; gain saturation; optical networks; optical time-division-multiplexed networks; patterning effects; pulse-position modulated data; pulse-position modulated data stream; pulse-position modulation; return-to-zero pulse-position modulation; semiconductor optical amplifiers; ultrafast nonlinear interferometer; Demultiplexing; Nonlinear optics; Optical interferometry; Optical modulation; Optical pulses; Optical switches; Pulse amplifiers; Pulse modulation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
