NDLI: Spectral control of dispersion-tuned wavelength-swept laser

Content Provider	IET Digital Library
Author	Takubo, Yuya Yamashita, Shinji
Abstract	Spectral profile control method of a dispersion-tuned fibre laser is demonstrated. A dispersion-tuned fibre laser is a fast and widely tunable wavelength-swept laser without mechanical tunable filters. The lasing centre wavelength is tuned by changing the active mode-locking modulation frequency to that of the corresponding operating wavelength matching the fundamental repetition rate of the cavity. The sweep spectra profile can be controlled by modulation frequency sweep. By applying a pre-calculated modulation frequency sweep, the flatness of the wavelength-swept spectral profile can be improved. We applied the dispersion-tuned wavelength-swept laser to a spectral-domain optical coherence tomography system as a wideband light source and successfully obtained OCT images. The image resolution is enhanced by applying a nonlinear modulation frequency sweep to the laser instead of linear modulation frequency sweep. The potential of the proposed dispersion-tuned wavelength-swept laser as a spectrally flexible laser source is demonstrated.
Starting Page	98
Ending Page	100
Page Count	3
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 2, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2016.3582
Journal	Electronics Letters
Publisher Date	2016-12-07
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Mode-locking Modulation Frequency Design of Specific Laser System Dispersion-tuned Wavelength-swept Laser Fibre Laser Fibre Lasers And Amplifier Fundamental Repetition Rate Image Enhancement Image Processing Image Resolution Image Resolution Enhancement Laser Beam Modulation Laser Cavity Laser Cavity Resonator Laser Mode Locking Laser Resonator And Cavities Laser Tuning Mode Locking And Tuning Nonlinear Modulation Frequency Sweep OCT Image Optical Dispersion Optical Modulation Optical Tomography Optical, Image And Video Signal Processing Pulsing And Switching Resolution of Optical Image Restoration Spectral Profile Control Method Spectral-domain Optical Coherence Tomography System Sweep Spectra Profile Wavelength-swept Spectral Profile Flatness Wideband Light Source
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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