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All-optical TDM demultiplexing systems with significant timing jitter tolerance through incorporation of square pulse generating fiber Bragg gratings

All-optical TDM demultiplexing systems with significant timing jitter tolerance through incorporation of square pulse generating fiber Bragg gratings
All-optical TDM demultiplexing systems with significant timing jitter tolerance through incorporation of square pulse generating fiber Bragg gratings
As OTDM data rates increase, and the pulses used get correspondingly shorter, the synchronization requirements placed on the locally generated pulses used to control the switch operation can become a limiting practical issue. The key to reducing time jitter tolerance in such devices is to establish a rectangular temporal switching window [1]. This reduces the absolute accuracy for temporal bit alignment and provides optimal resilience to timing jitter-induced errors.

In this paper we report the use of superstructured fiber Bragg gratings (SSFBGs) to convert the output of an actively mode-locked, 2.5ps fiber laser, a reliable source of short pulses of a well-defined soliton shape, to 20ps square pulses [2]. These pulses are then used to control the operation of two sorts of nonlinear switch. High quality, ~15-20ps rectangular switching windows are obtained, providing +/-7ps, 15ps timing jitter tolerance, in switches based on both the Kerr effect in dispersion shifted fiber (nonlinear optical loop mirror (NOLM)), and on four-wave mixing in a semiconductor amplifier (SOA). This approach is particularly attractive for use with SOA based switching devices for which there is no ready way of shaping the switching window other than through direct control of the pulse shape
Lee, J.H.
3b88784a-02e7-4b63-b112-3fdb4e1abf4e
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
Lee, J.H.
3b88784a-02e7-4b63-b112-3fdb4e1abf4e
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

Lee, J.H., Teh, P.C., Petropoulos, P., Ibsen, M. and Richardson, D.J. (2001) All-optical TDM demultiplexing systems with significant timing jitter tolerance through incorporation of square pulse generating fiber Bragg gratings. IOP meeting on - In-fibre Bragg Gratings and Speciality Fibres. 01 Oct 2001.

Record type: Conference or Workshop Item (Paper)

Abstract

As OTDM data rates increase, and the pulses used get correspondingly shorter, the synchronization requirements placed on the locally generated pulses used to control the switch operation can become a limiting practical issue. The key to reducing time jitter tolerance in such devices is to establish a rectangular temporal switching window [1]. This reduces the absolute accuracy for temporal bit alignment and provides optimal resilience to timing jitter-induced errors.

In this paper we report the use of superstructured fiber Bragg gratings (SSFBGs) to convert the output of an actively mode-locked, 2.5ps fiber laser, a reliable source of short pulses of a well-defined soliton shape, to 20ps square pulses [2]. These pulses are then used to control the operation of two sorts of nonlinear switch. High quality, ~15-20ps rectangular switching windows are obtained, providing +/-7ps, 15ps timing jitter tolerance, in switches based on both the Kerr effect in dispersion shifted fiber (nonlinear optical loop mirror (NOLM)), and on four-wave mixing in a semiconductor amplifier (SOA). This approach is particularly attractive for use with SOA based switching devices for which there is no ready way of shaping the switching window other than through direct control of the pulse shape

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Published date: 2001
Venue - Dates: IOP meeting on - In-fibre Bragg Gratings and Speciality Fibres, 2001-10-01 - 2001-10-01

Identifiers

Local EPrints ID: 17114
URI: https://eprints.soton.ac.uk/id/eprint/17114
PURE UUID: f23b9a20-5fe3-4d83-ae4d-1e1eceda74c5
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

Catalogue record

Date deposited: 14 Sep 2005
Last modified: 06 Mar 2019 01:37

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Contributors

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

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