Suppression of RF noise tones caused by Rayleigh backscatter in to an unisolated laser using audio-frequency external optical-phase modulation

Hongbing Gan; Arthur J. Lowery; Richard D.T. Lauder

doi:10.1109/68.730500

Suppression of RF noise tones caused by Rayleigh backscatter in to an unisolated laser using audio-frequency external optical-phase modulation

Hongbing Gan
, Arthur J. Lowery
, Richard D.T. Lauder

Research output: Contribution to journal › Article › Research › peer-review

1 Citation (Scopus)

Abstract

When Fabry-Perot lasers are subject to Rayleigh backscatter, dramatic line-narrowing and frequency hopping up to 500 MHz, evidenced by radio-frequency (RF) tones, are observed. These RF tones will severely degrade the system performance of a subcarrier multiplexed transmission system, such as quadrature phase-shift keying. In this letter, it is demonstrated that audio-frequency external optical-phase modulation can suppress the noise tones and restore the laser linewidth. This scheme may offer an inexpensive alternative to optical isolators to recover the system performance and thus is very important for cost-effective customer access networks.

Original language	English
Pages (from-to)	1778-1780
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	10
Issue number	12
DOIs	https://doi.org/10.1109/68.730500
Publication status	Published - 1 Dec 1998
Externally published	Yes

Keywords

Audio frequency
Customer access network
Noise suppression
Optical-phase modulation
Rayleigh backscatter

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10.1109/68.730500

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title = "Suppression of RF noise tones caused by Rayleigh backscatter in to an unisolated laser using audio-frequency external optical-phase modulation",

abstract = "When Fabry-Perot lasers are subject to Rayleigh backscatter, dramatic line-narrowing and frequency hopping up to 500 MHz, evidenced by radio-frequency (RF) tones, are observed. These RF tones will severely degrade the system performance of a subcarrier multiplexed transmission system, such as quadrature phase-shift keying. In this letter, it is demonstrated that audio-frequency external optical-phase modulation can suppress the noise tones and restore the laser linewidth. This scheme may offer an inexpensive alternative to optical isolators to recover the system performance and thus is very important for cost-effective customer access networks.",

keywords = "Audio frequency, Customer access network, Noise suppression, Optical-phase modulation, Rayleigh backscatter",

author = "Hongbing Gan and Lowery, \{Arthur J.\} and Lauder, \{Richard D.T.\}",

year = "1998",

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doi = "10.1109/68.730500",

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AU - Gan, Hongbing

AU - Lowery, Arthur J.

AU - Lauder, Richard D.T.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - When Fabry-Perot lasers are subject to Rayleigh backscatter, dramatic line-narrowing and frequency hopping up to 500 MHz, evidenced by radio-frequency (RF) tones, are observed. These RF tones will severely degrade the system performance of a subcarrier multiplexed transmission system, such as quadrature phase-shift keying. In this letter, it is demonstrated that audio-frequency external optical-phase modulation can suppress the noise tones and restore the laser linewidth. This scheme may offer an inexpensive alternative to optical isolators to recover the system performance and thus is very important for cost-effective customer access networks.

AB - When Fabry-Perot lasers are subject to Rayleigh backscatter, dramatic line-narrowing and frequency hopping up to 500 MHz, evidenced by radio-frequency (RF) tones, are observed. These RF tones will severely degrade the system performance of a subcarrier multiplexed transmission system, such as quadrature phase-shift keying. In this letter, it is demonstrated that audio-frequency external optical-phase modulation can suppress the noise tones and restore the laser linewidth. This scheme may offer an inexpensive alternative to optical isolators to recover the system performance and thus is very important for cost-effective customer access networks.

KW - Audio frequency

KW - Customer access network

KW - Noise suppression

KW - Optical-phase modulation

KW - Rayleigh backscatter

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DO - 10.1109/68.730500

M3 - Article

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SN - 1041-1135

VL - 10

SP - 1778

EP - 1780

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 12

ER -

Suppression of RF noise tones caused by Rayleigh backscatter in to an unisolated laser using audio-frequency external optical-phase modulation

Abstract

Keywords

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