Quantum Intensity Noise of Directly Modulated Laser Diode Influenced by Reflected Waves

Osamu HIROTA; Yasuharu SUEMATSU

Quantum Intensity Noise of Directly Modulated Laser Diode Influenced by Reflected Waves

Osamu HIROTA, Yasuharu SUEMATSU

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The noise properties of directly modulated laser diode influenced by reflected waves are given theoretically. Firstly, the quantum noise enhancement effect due to direct modulation is found theoretically in term of product between the quantum shot noise and the modulation current. Secondly, the high-frequency intensity noise due to reflected waves (often so-called self-coupling effect) is clarified to be due to resonance of the quantum shot noise to the external cavity. According to our theory, it is found that the noise of the narrow stripe laser diode with the stripe width comparable to the diffusion length of carrier is about 10 dB smaller than that of the wide stripe laser. And also, the reverse isolation loss of an optical isolator is estimated theoretically to be 30 dB to reduce the relative high-frequency intensity noise by 40 dB.

Publication: IEICE TRANSACTIONS on transactions Vol.E65-E No.2 pp.94-101

Publication Date: 1982/02/25

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Type of Manuscript: PAPER

Category: Optical and Quantum Electronics

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Osamu HIROTA
Yasuharu SUEMATSU

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Osamu HIROTA, Yasuharu SUEMATSU, "Quantum Intensity Noise of Directly Modulated Laser Diode Influenced by Reflected Waves" in IEICE TRANSACTIONS on transactions, vol. E65-E, no. 2, pp. 94-101, February 1982, doi: .
Abstract: The noise properties of directly modulated laser diode influenced by reflected waves are given theoretically. Firstly, the quantum noise enhancement effect due to direct modulation is found theoretically in term of product between the quantum shot noise and the modulation current. Secondly, the high-frequency intensity noise due to reflected waves (often so-called self-coupling effect) is clarified to be due to resonance of the quantum shot noise to the external cavity. According to our theory, it is found that the noise of the narrow stripe laser diode with the stripe width comparable to the diffusion length of carrier is about 10 dB smaller than that of the wide stripe laser. And also, the reverse isolation loss of an optical isolator is estimated theoretically to be 30 dB to reduce the relative high-frequency intensity noise by 40 dB.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e65-e_2_94/_p

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@ARTICLE{e65-e_2_94,
author={Osamu HIROTA, Yasuharu SUEMATSU, },
journal={IEICE TRANSACTIONS on transactions},
title={Quantum Intensity Noise of Directly Modulated Laser Diode Influenced by Reflected Waves},
year={1982},
volume={E65-E},
number={2},
pages={94-101},
abstract={The noise properties of directly modulated laser diode influenced by reflected waves are given theoretically. Firstly, the quantum noise enhancement effect due to direct modulation is found theoretically in term of product between the quantum shot noise and the modulation current. Secondly, the high-frequency intensity noise due to reflected waves (often so-called self-coupling effect) is clarified to be due to resonance of the quantum shot noise to the external cavity. According to our theory, it is found that the noise of the narrow stripe laser diode with the stripe width comparable to the diffusion length of carrier is about 10 dB smaller than that of the wide stripe laser. And also, the reverse isolation loss of an optical isolator is estimated theoretically to be 30 dB to reduce the relative high-frequency intensity noise by 40 dB.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - Quantum Intensity Noise of Directly Modulated Laser Diode Influenced by Reflected Waves
T2 - IEICE TRANSACTIONS on transactions
SP - 94
EP - 101
AU - Osamu HIROTA
AU - Yasuharu SUEMATSU
PY - 1982
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E65-E
IS - 2
JA - IEICE TRANSACTIONS on transactions
Y1 - February 1982
AB - The noise properties of directly modulated laser diode influenced by reflected waves are given theoretically. Firstly, the quantum noise enhancement effect due to direct modulation is found theoretically in term of product between the quantum shot noise and the modulation current. Secondly, the high-frequency intensity noise due to reflected waves (often so-called self-coupling effect) is clarified to be due to resonance of the quantum shot noise to the external cavity. According to our theory, it is found that the noise of the narrow stripe laser diode with the stripe width comparable to the diffusion length of carrier is about 10 dB smaller than that of the wide stripe laser. And also, the reverse isolation loss of an optical isolator is estimated theoretically to be 30 dB to reduce the relative high-frequency intensity noise by 40 dB.
ER -