Frequency chirp under current modulaton in InGaAsP injection lasers

Dutta, Niloy K.; Olsson, N.A.; Koszi, L. A.; Besomi, P.; Wilson, R. B.; Nelson, R. J.

doi:10.1063/1.334218

Cited by 33 publications

(6 citation statements)

References 18 publications

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“…The injection current modulation induces a change of the phase in laser oscillations known as frequency chirp (Dutta et al 1984;Linke 1985;Agrawal 1985;Kazarinov and Henry 1987). We write the fluctuation of the frequency as δν(t) = dδφ(t)/dt/2π .…”

Section: Phase Modulation Characteristicsmentioning

confidence: 99%

“…Experimentally measured chirp as a function of the peak-to-peak value of the modulation current for various laser structures at a wavelength of 1.3 µm. CSBH channel-substrate buried heterostructure semiconductor laser, DCPBH double-channel planar buried heterostructure semiconductor laser, RWG ridge waveguide semiconductor laser [after Dutta et al (1984);© 1984 AIP] the phase has a negligible small value θ ν ∼ 0 and the modulated intensity is in-phase with the injection current modulation.…”

Section: Phase Modulation Characteristicsmentioning

confidence: 99%

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Semiconductor Lasers and Theory

Ohtsubo

2012

Springer Series in Optical Sciences

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In this chapter, we discuss the oscillation conditions for semiconductor lasers and, then, derive the rate equations, which are the starting points of the study of chaotic dynamics in semiconductor lasers. The semiconductor laser described here is a Fabry-Perot type with a mono-layer of the active region, however other narrow-stripe edge-emitting lasers such as multi-quantum well (MQW) lasers and distributed feedback (DFB) lasers can be theoretically treated in the same manner as Fabry-Perot lasers. Therefore, the macroscopic features of these lasers show the same behaviors from the viewpoint of chaotic dynamics, although the detailed characteristics strongly depend on the laser structure and the particular values of the device parameters. The relaxation oscillation frequency, which is calculated from the rate equations plays an important role for the dynamics of semiconductor lasers. The Langevin terms, which are stochastic noise effects, are introduced in the rate equations. Some other fundamental characteristics of semiconductor lasers are also discussed.

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Section: Phase Modulation Characteristicsmentioning

confidence: 99%

Section: Phase Modulation Characteristicsmentioning

confidence: 99%

Semiconductor Lasers and Theory

Ohtsubo

2012

Springer Series in Optical Sciences

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“…17 Chirp is a change in wavelength caused by a change in the modal refractive index. The index change due to free-carrier dynamics in high speed lasers has been thoroughly studied due to the implications for optical fiber communications.…”

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confidence: 99%

Observing lateral temperature and refractive index profiles in an optically pumped midinfrared laser through temporally and spatially resolved spectra

Yan

McDaniel

Moeller

et al. 1997

Applied Physics Letters

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We show how temporally and spatially resolved lasing spectra may be interpreted to obtain quantitative information on the lattice temperature and refractive index distribution in an optically pumped GaInAsSb/AlGaAsSb quantum well 1.8 μm midwave-infrared laser. We present this technique as a method for evaluating and comparing high power laser structures in terms of optical and thermal efficiency. We also suggest how this method might provide insight into the particulars of filamentation and heat transport in both electrically and optically pumped structures.

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“…A laser source can be directly modulated by the current supply to achieve this purpose, which represents the simplest form of intensity modulation. However, with the increasing need of longer communication distance and higher modulation frequency (>20GHz), the direct modulation has reached its limit due to the frequency chirp, signal noise and distortion [109][110].…”

Section: Electroabsorption Modulator (Eam)mentioning

confidence: 99%

Device building blocks for photonic integration : design and process

Lee¹

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First of all, I would like to express my gratitude to Associate Professor Chin Mee Koy. His encouragement and guidance throughout the course of my study have been an important factor for me in completing my project. I am grateful to Professor Chua Soo Jin from the Institute of Material Research and Engineering (IMRE). His advice and time spent in the project discussion have been very motivating for the progress of my project. I also appreciate the invaluable assistance from Dr. Teng Jing Hua, who also from IMRE, for the generous sharing of his technical knowledge and research material with me. Special thanks to Associate Professor Mei Ting and Assistant Professor Tang Xiaohong at the same time, for their kind assistance in my project. I would like to thank Ms. Lee Shuh Ying as well, for the fruitful discussion and the sharing of her expertise in waveguide measurement. The project would not have completed without her helping hand. Much appreciation is expressed to Mr. Stevanus

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Frequency chirp under current modulaton in InGaAsP injection lasers

Cited by 33 publications

References 18 publications

Semiconductor Lasers and Theory

Semiconductor Lasers and Theory

Observing lateral temperature and refractive index profiles in an optically pumped midinfrared laser through temporally and spatially resolved spectra

Device building blocks for photonic integration : design and process

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