NDLI: Analysis of Dynamic Properties of Dispersion-Tuned Swept Lasers

Content Provider	IEEE Xplore Digital Library
Author	Hasegawa, Y. Shirahata, T. Yamashita, S.
Copyright Year	1983
Abstract	Dispersion-tuned swept lasers (DTSLs) can sweep the lasing wavelength widely at high speed without need for any filter and have good potential for sensing applications, such as swept-source optical coherence tomography (SS-OCT). Properties of DTSLs, tuning range, tuning speed, and spectral linewidth, etc., are determined by several parameters, amount of dispersion, cavity length, modulation frequency and depth, and nonlinearity. Two models have been suggested to analyze and design the DTSLs, which are both only valid for steady states without wavelength sweep. For interferometric sensing applications, coherence (∝ instantaneous linewidth) of the DTSL under fast sweep is of great importance. In this paper, we propose two models for analysis of dynamic properties of DTSLs, expanding the two steady-state models, and present the results of numerical calculations. We confirmed that the two dynamic-state models give similar results for the typical DTSLs used for the SS-OCT. We found that the sweep can be fast without spread of the instantaneous linewidth when the sweep is toward the longer wavelength with anomalous dispersion and high modulation frequency.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	219
Ending Page	226
Page Count	8
File Size	946598
File Format	PDF
ISSN	07338724
Volume Number	33
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency modulation Dispersion Semiconductor optical amplifiers Cavity resonators Laser mode locking Analytical models dispersion tuning Fiber lasers optical coherence tomography swept source Dispersion tuning fiber lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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