Picosecond Optical Switching Using RF Nonlinear Transmission Lines

We propose a novel sub-ps optical switch composed of an interferometer in which the phase difference between the arms is controlled by a pair of electrooptic modulators (EOMs) driven by integrated nonlinear transmission lines (NLTLs). As a proof-of-concept we demonstrate 70 ps switching using discre...

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Bibliographic Details
Published in:Journal of lightwave technology 2011-03, Vol.29 (5), p.666-669
Main Authors: Johnson, D M S, Hogan, J M, Chiow, S, Kasevich, M A
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Electrooptic modulation
Exact sciences and technology
Falling
Information, signal and communications theory
Integrated optics. Optical fibers and wave guides
Integrated optoelectronics. Optoelectronic circuits
Interferometers
Modulators
Multiplexing
Nonlinearity
Optical and optoelectronic circuits
Optical interferometry
Optical pulses
Optical switches
Optical switching
Phase modulation
Physics
Radio frequency
Sagnac interferometers
Signal and communications theory
Switches
Switching
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
time-division multiplexing
Transmission lines
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Description
Summary:We propose a novel sub-ps optical switch composed of an interferometer in which the phase difference between the arms is controlled by a pair of electrooptic modulators (EOMs) driven by integrated nonlinear transmission lines (NLTLs). As a proof-of-concept we demonstrate 70 ps switching using discrete LiNbO 3 traveling wave EOMs and commercially available NLTLs capable of delivering a 35 ps falling edge. This technique is simple and robust, and can potentially be extended to sub-ps switching by integrating the NLTL into the EOM waveguide. This fast switch can be used to implement an Optical Time Division Multiplexing (OTDM) network architecture.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2010.2103301