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Noise analysis of an amplified fiber-optic recirculating-ring delay line

Noise analysis of an amplified fiber-optic recirculating-ring delay line
Noise analysis of an amplified fiber-optic recirculating-ring delay line
We present the first theoretical and experimental noise analysis of a fiber-optic recirculating-ring delay line (RDL) including a doped fiber amplifier to compensate for the roundtrip loss. Both thermal-like sources and laser sources are considered. The output source induced noise (signal-signal beat noise), signal-spontaneous (s-sp) beat noise, and spontaneous-spontaneous (sp-sp) beat noise spectra for a thermal-like source are calculated from the autocorrelation function of the output detector current. It is shown that all three electrical beat noise spectra can be expressed as correlations of the output optical signal and ASE spectra. The source-induced noise will normally be the dominating noise source, but in some applications, the other noise terms also will be of importance. We use our theory to define the maximum number of recirculations in an amplified RDL with a pulsed source, where the fundamental noise floor is determined by the sp-sp beat noise.
0733-8724
573-582
Kringlebotn, J.T.
89b7e099-8b45-48a6-9a14-3b72602d9429
Blotekjaer, K.
713ecc2b-7c7f-499f-a33d-a6f671e5a9e7
Kringlebotn, J.T.
89b7e099-8b45-48a6-9a14-3b72602d9429
Blotekjaer, K.
713ecc2b-7c7f-499f-a33d-a6f671e5a9e7

Kringlebotn, J.T. and Blotekjaer, K. (1994) Noise analysis of an amplified fiber-optic recirculating-ring delay line. IEEE Journal of Lightwave Technology, 12 (3), 573-582. (doi:10.1109/50.285340).

Record type: Article

Abstract

We present the first theoretical and experimental noise analysis of a fiber-optic recirculating-ring delay line (RDL) including a doped fiber amplifier to compensate for the roundtrip loss. Both thermal-like sources and laser sources are considered. The output source induced noise (signal-signal beat noise), signal-spontaneous (s-sp) beat noise, and spontaneous-spontaneous (sp-sp) beat noise spectra for a thermal-like source are calculated from the autocorrelation function of the output detector current. It is shown that all three electrical beat noise spectra can be expressed as correlations of the output optical signal and ASE spectra. The source-induced noise will normally be the dominating noise source, but in some applications, the other noise terms also will be of importance. We use our theory to define the maximum number of recirculations in an amplified RDL with a pulsed source, where the fundamental noise floor is determined by the sp-sp beat noise.

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Published date: March 1994
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 78205
URI: http://eprints.soton.ac.uk/id/eprint/78205
ISSN: 0733-8724
PURE UUID: 48fbdd07-2228-4843-89be-2b5e628effa4

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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:08

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Contributors

Author: J.T. Kringlebotn
Author: K. Blotekjaer

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