We propose a novel ultrafast (instantaneous response), low-power,and simple demultiplexer for optical time-division multiplexed signals. It requires no ultrafast optical devices such as all-optical gates or electroabsorption modulators. Only a power combiner and a dispersive medium are required as optical components, thus making the system very simple. Furthermore, the separation of control pulses is not required, which also helps to simplify the system. A design optimization in terms of the signal-to-noise ratio was performed,and equations that provide design parameters were derived. The effect of the wavelength fluctuation and the timing jitter of signal pulses were evaluated based on a numerical analysis, which indicated that this demultiplexer shows a small bit error rate (< 10-10),even under a large wavelength fluctuation ( 7.2 nm, 43% of the pulse spectral width) or a large timing jitter ( 0.45 ps, 18% of the signal period) in the case of demultiplexing from 400 to 6.67 GHz. Demultiplexing of pulse trains with 2.5-ps separation (corresponding to 400-GHz repetition) was experimentally demonstrated.
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
Login to access OSA Member Subscription