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Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings

Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings
Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings
We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components for optical code division multiple access (OCDMA) system. Firstly, we perform a comparative study of the relative merits of bipolar and unipolar coding:decoding schemes and show that the SSFBG approach allows high quality Unipolar and bipolar coding. A performance close to that theoretically predicted for 7-chip, 160 Gchip/s M-sequence codes is obtained. Secondly, we report the fabrication and performance of 63-chip, 160 Gchip/s, bipolar Gold sequence grating pairs. These codes are at least 8 times longer than those generated by any other scheme based on fiber grating technology so far reported. Finally, we describe a range of transmission system experiments for both the 7 and 63-bit bipolar grating pairs. Error-free performance is obtained over transmission distances of ~25km of standard fiber. In addition, we have demonstrated error-fr
ee/penalty-free performance under multi-user operation (two simultaneous users). Our results highlight the precision and flexibility of our particular grating writing process and show that SSFBG technology represents a promising technology not just for OCDMA but an extended range of other pulse shaping, optical processing applications.
Teh, P.C.
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Petropoulos, P.
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Ibsen, M.
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Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Teh, P.C.
1e229dd3-3374-4599-b220-be515ac1ed51
Petropoulos, P.
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Teh, P.C., Petropoulos, P., Ibsen, M. and Richardson, D.J. (2001) Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings. Rank Prize Fund Mini-Symposium: Terabit Optical Networks. 02 - 05 Apr 2001.

Record type: Conference or Workshop Item (Paper)

Abstract

We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components for optical code division multiple access (OCDMA) system. Firstly, we perform a comparative study of the relative merits of bipolar and unipolar coding:decoding schemes and show that the SSFBG approach allows high quality Unipolar and bipolar coding. A performance close to that theoretically predicted for 7-chip, 160 Gchip/s M-sequence codes is obtained. Secondly, we report the fabrication and performance of 63-chip, 160 Gchip/s, bipolar Gold sequence grating pairs. These codes are at least 8 times longer than those generated by any other scheme based on fiber grating technology so far reported. Finally, we describe a range of transmission system experiments for both the 7 and 63-bit bipolar grating pairs. Error-free performance is obtained over transmission distances of ~25km of standard fiber. In addition, we have demonstrated error-fr
ee/penalty-free performance under multi-user operation (two simultaneous users). Our results highlight the precision and flexibility of our particular grating writing process and show that SSFBG technology represents a promising technology not just for OCDMA but an extended range of other pulse shaping, optical processing applications.

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Published date: 2001
Venue - Dates: Rank Prize Fund Mini-Symposium: Terabit Optical Networks, 2001-04-02 - 2001-04-05

Identifiers

Local EPrints ID: 17148
URI: https://eprints.soton.ac.uk/id/eprint/17148
PURE UUID: 051d1e92-f91c-49fa-bc24-52a36352f948
ORCID for P. Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 15 Sep 2005
Last modified: 03 Dec 2019 02:05

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Contributors

Author: P.C. Teh
Author: P. Petropoulos ORCID iD
Author: M. Ibsen
Author: D.J. Richardson ORCID iD

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