IEICE TRANSACTIONS on transactions
Large-Signal Analysis of Dynamic Wavelength Shift and Carrier-Density-Variation in Directly Modulated Dynamic-Single-Mode Lasers
Summary :
The wavelength shift of a dynamic-single-mode (DSM) laser directly modulated by sinusoidal current has been investigated using the large-signal analysis. A rate equation which includes carrier diffusion terms is solved numerically. The variation of the carrier density as an origin of the dynamic wavelength shift is calculated. The calculated dynamic wavelength sifts are in good agreement with experiments. At high modulation frequency range, the dynamic wavelength shift is mainly caused by relaxation oscillations and the shift is almost constant to the stripe width of active guide. It shows that the dynamic wavelength shift in pulse modulation is also independent of the stripe width of active guide. An analytical expression of dynamic wavelength shift is given at low modulation frequency range. When the modulation depth is below 30 percent, the small-single analysis is in agreement with large-signal analysis. By considering the effect of spontaneous emission, a modified small-signal analysis presented here is applicable to a modulation depth of 100 percent in the case of low frequency limit.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E67-E No.9 pp.480-487
- Publication Date
- 1984/09/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Optical and Quantum Electronics
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Hideaki TSUSHIMA, Yasuharu SUEMATSU, "Large-Signal Analysis of Dynamic Wavelength Shift and Carrier-Density-Variation in Directly Modulated Dynamic-Single-Mode Lasers" in IEICE TRANSACTIONS on transactions,
vol. E67-E, no. 9, pp. 480-487, September 1984, doi: .
Abstract: The wavelength shift of a dynamic-single-mode (DSM) laser directly modulated by sinusoidal current has been investigated using the large-signal analysis. A rate equation which includes carrier diffusion terms is solved numerically. The variation of the carrier density as an origin of the dynamic wavelength shift is calculated. The calculated dynamic wavelength sifts are in good agreement with experiments. At high modulation frequency range, the dynamic wavelength shift is mainly caused by relaxation oscillations and the shift is almost constant to the stripe width of active guide. It shows that the dynamic wavelength shift in pulse modulation is also independent of the stripe width of active guide. An analytical expression of dynamic wavelength shift is given at low modulation frequency range. When the modulation depth is below 30 percent, the small-single analysis is in agreement with large-signal analysis. By considering the effect of spontaneous emission, a modified small-signal analysis presented here is applicable to a modulation depth of 100 percent in the case of low frequency limit.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e67-e_9_480/_p
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@ARTICLE{e67-e_9_480,
author={Hideaki TSUSHIMA, Yasuharu SUEMATSU, },
journal={IEICE TRANSACTIONS on transactions},
title={Large-Signal Analysis of Dynamic Wavelength Shift and Carrier-Density-Variation in Directly Modulated Dynamic-Single-Mode Lasers},
year={1984},
volume={E67-E},
number={9},
pages={480-487},
abstract={The wavelength shift of a dynamic-single-mode (DSM) laser directly modulated by sinusoidal current has been investigated using the large-signal analysis. A rate equation which includes carrier diffusion terms is solved numerically. The variation of the carrier density as an origin of the dynamic wavelength shift is calculated. The calculated dynamic wavelength sifts are in good agreement with experiments. At high modulation frequency range, the dynamic wavelength shift is mainly caused by relaxation oscillations and the shift is almost constant to the stripe width of active guide. It shows that the dynamic wavelength shift in pulse modulation is also independent of the stripe width of active guide. An analytical expression of dynamic wavelength shift is given at low modulation frequency range. When the modulation depth is below 30 percent, the small-single analysis is in agreement with large-signal analysis. By considering the effect of spontaneous emission, a modified small-signal analysis presented here is applicable to a modulation depth of 100 percent in the case of low frequency limit.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - Large-Signal Analysis of Dynamic Wavelength Shift and Carrier-Density-Variation in Directly Modulated Dynamic-Single-Mode Lasers
T2 - IEICE TRANSACTIONS on transactions
SP - 480
EP - 487
AU - Hideaki TSUSHIMA
AU - Yasuharu SUEMATSU
PY - 1984
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E67-E
IS - 9
JA - IEICE TRANSACTIONS on transactions
Y1 - September 1984
AB - The wavelength shift of a dynamic-single-mode (DSM) laser directly modulated by sinusoidal current has been investigated using the large-signal analysis. A rate equation which includes carrier diffusion terms is solved numerically. The variation of the carrier density as an origin of the dynamic wavelength shift is calculated. The calculated dynamic wavelength sifts are in good agreement with experiments. At high modulation frequency range, the dynamic wavelength shift is mainly caused by relaxation oscillations and the shift is almost constant to the stripe width of active guide. It shows that the dynamic wavelength shift in pulse modulation is also independent of the stripe width of active guide. An analytical expression of dynamic wavelength shift is given at low modulation frequency range. When the modulation depth is below 30 percent, the small-single analysis is in agreement with large-signal analysis. By considering the effect of spontaneous emission, a modified small-signal analysis presented here is applicable to a modulation depth of 100 percent in the case of low frequency limit.
ER -
English
