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Summary: ICTON 2007
Interferometric Noise Characterisation of a 2-D Time Spreading
Wavelength Hopping OCDMA Networks using FBG
Encoding/Decoding
Craig Michiel, Robert Atkinson', Ivan Andonovicl, Ivan Glesk2, Paul Prucnal2
Kensuke Sasaki3, Gyaneshwar Gupta3
Department ofElectronic and Electrical Engineering, University ofStrathclyde, Glasgow, Scotland G] lXW
2Department ofElectrical Engineering, Princeton University, Princeton, NJ 08544
3 Oki Electric Industry Co., Ltd., Advanced Devices Laboratories
Email. c.michie@,&eee.strath.ac.uk
ABSTRACT
The results of a range of experimental characterization exercises of interferometric noise (IN) for the case of
a representative 2-D time spreading wavelength-hopping (2-D TW) optical code family are presented.
Interferometric noise is evaluated at a data rate of 2.5 Gbps within an OCDMA network emulation test bed
established utilising fibre Bragg grating encoders/decoders. The results demonstrate that this form of noise
introduces significant system power penalties and must be taken into consideration in any OCDMA network
designs and implementations.
Keywords: optical code-division multiple access (OCDMA), time-wavelength optical codes, beat noise,
fibre Bragg grating coders.
1. INTRODUCTION
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