Design of WDM Cross Connect Based on Interleaved AWG (IAWG) and a Phase Shifter Array

A general design rule for interleaved arrayed waveguide gratings (IAWGs) is derived. A 1timesN WDM switch that is based on a phase shifter array, which is sandwiched between two N-IAWGs, is systematically analyzed. A practical design example of a 1times4 nonblocking wavelength division multiplexing...

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Bibliographic Details
Published in:Journal of lightwave technology 2007-06, Vol.25 (6), p.1390-1400
Main Authors: Wan, Yueting, Hui, Rongqing
Format: Article
Language:English
Subjects:
All optical circuits
Applied sciences
Arrayed waveguide grating (AWG)
Arrayed waveguide gratings
Arrays
Blocking
Circuit properties
Design engineering
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Information, signal and communications theory
Integrated optics. Optical fibers and wave guides
Multiplexing
Optical and optoelectronic circuits
optical cross connect (OXC)
Optical fiber communications
Optical packet switching
Optical refraction
optical switch
Optical switches
Optical telecommunications
Optical tuning
Optical waveguides
Phase shifters
Phased arrays
photonic device
planar lightwave circuits (PLCs)
Reflection
Signal and communications theory
Switches
Switching circuits
Switching theory
Telecommunications
Telecommunications and information theory
Wavelength division multiplexing
wavelength division multiplexing (WDM)
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Description
Summary:A general design rule for interleaved arrayed waveguide gratings (IAWGs) is derived. A 1timesN WDM switch that is based on a phase shifter array, which is sandwiched between two N-IAWGs, is systematically analyzed. A practical design example of a 1times4 nonblocking wavelength division multiplexing (WDM) switch is detailed to illustrate the design steps and the required phase assignment of each phase shifter for various output states. Based on the reciprocity principle, a simplified structure of the 1timesN WDM switch is proposed, which requires only one N-IAWG with total reflection implemented at the end of each phase shifter. This type of NtimesN WDM switch can be used as a fundamental building block to construct the nonblocking WDM all-optical switch that will be indispensable for future all-optical networks.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2007.896808