Single-mode 140 nm swept light source realized by using SSG-DBR lasers

N. Fujiwara, R. Yoshimura, K. Kato, H. Ishii, F. Kano, Y. Kawaguchi, Y. Kondo, K. Ohbayashi, H. Oohashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate a single-mode and fast wavelength swept light source by using Superestrucuture grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. The SSG-DBR lasers provide single-mode operation resulting in high coherency. Response of the wavelength tuning is very fast; several nanoseconds, but there was an unintentional wavelength drift resulting from a thermal drift due to injecting tuning current. The dri1ft unfortunately requires long time to converge; more than a few milliseconds. For suppressing the wavelength drift, we introduced Thermal Drift Compensation mesa (TDC) parallel to the laser mesa with the spacing of 20 μm. By controlling TDC current to satisfy the total electric power injected into both the laser mesa and the TDC mesa, the thermal drift can be suppressed. In the present work, we fabricated 4 wavelength's kinds of SSG-DBR laser, which covers respective wavelength band; S-band (1496-1529 nm), C-band (1529-1564 nm), L--band (1564-1601 nm), and L+-band (1601-1639). We set the frequency channel of each laser with the spacing 6.25 GHz and 700 channels. The total frequency channel number is 2800 channels (700 ch × 4 lasers). We simultaneously operated the 4 lasers with a time interval of 500 ns/channel. A wavelength tuning range of more than 140 nm was achieved within 350 μs. The output power was controlled to be 10 mW for all channels. A single-mode, accurate, wide, and fast wavelength sweep was demonstrated with the SSG-DBR lasers having TDC mesa structure for the first time.

Original languageEnglish
Title of host publicationCoherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII
DOIs
Publication statusPublished - Apr 21 2008
Externally publishedYes
EventCoherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII - San Jose, CA, United States
Duration: Jan 21 2008Jan 23 2008

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6847
ISSN (Print)1605-7422

Other

OtherCoherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII
CountryUnited States
CitySan Jose, CA
Period1/21/081/23/08

Fingerprint

DBR lasers
mesas
Light sources
light sources
Lasers
gratings
Light
Wavelength
Hot Temperature
wavelengths
Tuning
lasers
tuning
ultrahigh frequencies
Laser modes
spacing
S band
Optical tomography
C band
electric power

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

Cite this

Fujiwara, N., Yoshimura, R., Kato, K., Ishii, H., Kano, F., Kawaguchi, Y., ... Oohashi, H. (2008). Single-mode 140 nm swept light source realized by using SSG-DBR lasers. In Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII [684713] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 6847). https://doi.org/10.1117/12.765392

Single-mode 140 nm swept light source realized by using SSG-DBR lasers. / Fujiwara, N.; Yoshimura, R.; Kato, K.; Ishii, H.; Kano, F.; Kawaguchi, Y.; Kondo, Y.; Ohbayashi, K.; Oohashi, H.

Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII. 2008. 684713 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 6847).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fujiwara, N, Yoshimura, R, Kato, K, Ishii, H, Kano, F, Kawaguchi, Y, Kondo, Y, Ohbayashi, K & Oohashi, H 2008, Single-mode 140 nm swept light source realized by using SSG-DBR lasers. in Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII., 684713, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 6847, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII, San Jose, CA, United States, 1/21/08. https://doi.org/10.1117/12.765392
Fujiwara N, Yoshimura R, Kato K, Ishii H, Kano F, Kawaguchi Y et al. Single-mode 140 nm swept light source realized by using SSG-DBR lasers. In Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII. 2008. 684713. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE). https://doi.org/10.1117/12.765392
Fujiwara, N. ; Yoshimura, R. ; Kato, K. ; Ishii, H. ; Kano, F. ; Kawaguchi, Y. ; Kondo, Y. ; Ohbayashi, K. ; Oohashi, H. / Single-mode 140 nm swept light source realized by using SSG-DBR lasers. Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII. 2008. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE).
@inproceedings{2dc52be8504247a4b775fa8beb42ae4b,
title = "Single-mode 140 nm swept light source realized by using SSG-DBR lasers",
abstract = "We demonstrate a single-mode and fast wavelength swept light source by using Superestrucuture grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. The SSG-DBR lasers provide single-mode operation resulting in high coherency. Response of the wavelength tuning is very fast; several nanoseconds, but there was an unintentional wavelength drift resulting from a thermal drift due to injecting tuning current. The dri1ft unfortunately requires long time to converge; more than a few milliseconds. For suppressing the wavelength drift, we introduced Thermal Drift Compensation mesa (TDC) parallel to the laser mesa with the spacing of 20 μm. By controlling TDC current to satisfy the total electric power injected into both the laser mesa and the TDC mesa, the thermal drift can be suppressed. In the present work, we fabricated 4 wavelength's kinds of SSG-DBR laser, which covers respective wavelength band; S-band (1496-1529 nm), C-band (1529-1564 nm), L--band (1564-1601 nm), and L+-band (1601-1639). We set the frequency channel of each laser with the spacing 6.25 GHz and 700 channels. The total frequency channel number is 2800 channels (700 ch × 4 lasers). We simultaneously operated the 4 lasers with a time interval of 500 ns/channel. A wavelength tuning range of more than 140 nm was achieved within 350 μs. The output power was controlled to be 10 mW for all channels. A single-mode, accurate, wide, and fast wavelength sweep was demonstrated with the SSG-DBR lasers having TDC mesa structure for the first time.",
author = "N. Fujiwara and R. Yoshimura and K. Kato and H. Ishii and F. Kano and Y. Kawaguchi and Y. Kondo and K. Ohbayashi and H. Oohashi",
year = "2008",
month = "4",
day = "21",
doi = "10.1117/12.765392",
language = "English",
isbn = "9780819470225",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
booktitle = "Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII",

}

TY - GEN

T1 - Single-mode 140 nm swept light source realized by using SSG-DBR lasers

AU - Fujiwara, N.

AU - Yoshimura, R.

AU - Kato, K.

AU - Ishii, H.

AU - Kano, F.

AU - Kawaguchi, Y.

AU - Kondo, Y.

AU - Ohbayashi, K.

AU - Oohashi, H.

PY - 2008/4/21

Y1 - 2008/4/21

N2 - We demonstrate a single-mode and fast wavelength swept light source by using Superestrucuture grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. The SSG-DBR lasers provide single-mode operation resulting in high coherency. Response of the wavelength tuning is very fast; several nanoseconds, but there was an unintentional wavelength drift resulting from a thermal drift due to injecting tuning current. The dri1ft unfortunately requires long time to converge; more than a few milliseconds. For suppressing the wavelength drift, we introduced Thermal Drift Compensation mesa (TDC) parallel to the laser mesa with the spacing of 20 μm. By controlling TDC current to satisfy the total electric power injected into both the laser mesa and the TDC mesa, the thermal drift can be suppressed. In the present work, we fabricated 4 wavelength's kinds of SSG-DBR laser, which covers respective wavelength band; S-band (1496-1529 nm), C-band (1529-1564 nm), L--band (1564-1601 nm), and L+-band (1601-1639). We set the frequency channel of each laser with the spacing 6.25 GHz and 700 channels. The total frequency channel number is 2800 channels (700 ch × 4 lasers). We simultaneously operated the 4 lasers with a time interval of 500 ns/channel. A wavelength tuning range of more than 140 nm was achieved within 350 μs. The output power was controlled to be 10 mW for all channels. A single-mode, accurate, wide, and fast wavelength sweep was demonstrated with the SSG-DBR lasers having TDC mesa structure for the first time.

AB - We demonstrate a single-mode and fast wavelength swept light source by using Superestrucuture grating distributed Bragg reflector (SSG-DBR) lasers for use in optical frequency-domain reflectometry optical coherence tomography. The SSG-DBR lasers provide single-mode operation resulting in high coherency. Response of the wavelength tuning is very fast; several nanoseconds, but there was an unintentional wavelength drift resulting from a thermal drift due to injecting tuning current. The dri1ft unfortunately requires long time to converge; more than a few milliseconds. For suppressing the wavelength drift, we introduced Thermal Drift Compensation mesa (TDC) parallel to the laser mesa with the spacing of 20 μm. By controlling TDC current to satisfy the total electric power injected into both the laser mesa and the TDC mesa, the thermal drift can be suppressed. In the present work, we fabricated 4 wavelength's kinds of SSG-DBR laser, which covers respective wavelength band; S-band (1496-1529 nm), C-band (1529-1564 nm), L--band (1564-1601 nm), and L+-band (1601-1639). We set the frequency channel of each laser with the spacing 6.25 GHz and 700 channels. The total frequency channel number is 2800 channels (700 ch × 4 lasers). We simultaneously operated the 4 lasers with a time interval of 500 ns/channel. A wavelength tuning range of more than 140 nm was achieved within 350 μs. The output power was controlled to be 10 mW for all channels. A single-mode, accurate, wide, and fast wavelength sweep was demonstrated with the SSG-DBR lasers having TDC mesa structure for the first time.

UR - http://www.scopus.com/inward/record.url?scp=42149185730&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42149185730&partnerID=8YFLogxK

U2 - 10.1117/12.765392

DO - 10.1117/12.765392

M3 - Conference contribution

AN - SCOPUS:42149185730

SN - 9780819470225

T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII

ER -