140-nm Quasi-Continuous Fast Sweep Using SSG-DBR Lasers

We demonstrate a single-mode and fast wavelength swept light source by employing superstructure-grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. A noteworthy feature is that our laser employs a thermal drift compensa...

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Bibliographic Details
Published in:IEEE photonics technology letters 2008-06, Vol.20 (12), p.1015-1017
Main Authors: Fujiwara, N., Yoshimura, R., Kato, K., Ishii, H., Kano, F., Kawaguchi, Y., Kondo, Y., Ohbayashi, K., Oohashi, H.
Format: Article
Language:English
Subjects:
Bands
Biomedical optical imaging
Bragg reflectors
Coherence
Distributed Bragg reflectors
Drift
Laser modes
Laser theory
Laser tuning
Lasers
Light sources
Optical Coherence Tomography
Optical coherence tomography (OCT)
Optical sensors
Optical tuning
Semiconductor lasers
superstructure-grating distributed Bragg reflector (SSG-DBR) laser
thermal drift compensation
thermal management
Tuning
Wavelengths
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Summary:We demonstrate a single-mode and fast wavelength swept light source by employing superstructure-grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. A noteworthy feature is that our laser employs a thermal drift compensator (TDC). By utilizing the TDC, we achieved a fast wavelength sweep without any unexpected mode hopping. We newly designed and fabricated SSG-DBR lasers covering the following four wavelength bands: 1496-1529, 1529-1564, 1564-1601, and 1601-1639 nm. We achieved a stable operation for the whole wavelength range. A wide wavelength tuning of 143 nm was achieved within 1.4 ms. A single-mode, wide, and fast wavelength sweep was demonstrated.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.923544