Analysis of Optical Output Characteristics in Waveguide Coupled HCG-VCSELs

Yoshihiro TSUNEMI; Kazuhiro IKEDA; Hitoshi KAWAGUCHI

doi:10.1587/transele.E97.C.369

Analysis of Optical Output Characteristics in Waveguide Coupled HCG-VCSELs

Yoshihiro TSUNEMI, Kazuhiro IKEDA, Hitoshi KAWAGUCHI

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We numerically investigated the optical output characteristics in two kinds of optical waveguide coupled high-index-contrast subwavelength grating VCSELs (HCG-VCSELs) that couple the laser output to the in-plane waveguide, operating at a 1.55-µm region. One is the transverse electric (TE) HCG, and the other is the transverse magnetic (TM) HCG. In a waveguide coupled HCG without a cavity structure, the out-coupling efficiency to the waveguide strongly depends on the intensity of the incident light at the starting edge of the waveguide. In a waveguide coupled HCG-VCSEL, the ratio of the waveguide output to the optical power inside the active region is determined also by the intensity of the resonant mode at the waveguide edge. The TE-HCG-VCSEL exhibited an almost 30 times larger waveguide output power while the quality factor of the laser cavity is 1/3, compared to those in the TM-HCG-VCSEL. The single mode condition was satisfied for the waveguide of the TE-HCG-VCSEL while the first order mode was allowed for that of the TM-HCG-VCSEL. Positioning the mesa edge at the waveguide edge within 1-µm accuracy results in waveguide outputs of about 0.7 and 0.02% of that inside the active region for TE- and TM-HCG-VCSEL, respectively.

Publication: IEICE TRANSACTIONS on Electronics Vol.E97-C No.4 pp.369-376

Publication Date: 2014/04/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E97.C.369

Type of Manuscript: PAPER

Category: Lasers, Quantum Electronics

Authors

Yoshihiro TSUNEMI
  Nara Institute of Science and Technology
Kazuhiro IKEDA
  Nara Institute of Science and Technology
Hitoshi KAWAGUCHI
  Nara Institute of Science and Technology

Keyword

HCG, VCSEL, coupling efficiency, FDTD, SOI

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Yoshihiro TSUNEMI, Kazuhiro IKEDA, Hitoshi KAWAGUCHI, "Analysis of Optical Output Characteristics in Waveguide Coupled HCG-VCSELs" in IEICE TRANSACTIONS on Electronics, vol. E97-C, no. 4, pp. 369-376, April 2014, doi: 10.1587/transele.E97.C.369.
Abstract: We numerically investigated the optical output characteristics in two kinds of optical waveguide coupled high-index-contrast subwavelength grating VCSELs (HCG-VCSELs) that couple the laser output to the in-plane waveguide, operating at a 1.55-µm region. One is the transverse electric (TE) HCG, and the other is the transverse magnetic (TM) HCG. In a waveguide coupled HCG without a cavity structure, the out-coupling efficiency to the waveguide strongly depends on the intensity of the incident light at the starting edge of the waveguide. In a waveguide coupled HCG-VCSEL, the ratio of the waveguide output to the optical power inside the active region is determined also by the intensity of the resonant mode at the waveguide edge. The TE-HCG-VCSEL exhibited an almost 30 times larger waveguide output power while the quality factor of the laser cavity is 1/3, compared to those in the TM-HCG-VCSEL. The single mode condition was satisfied for the waveguide of the TE-HCG-VCSEL while the first order mode was allowed for that of the TM-HCG-VCSEL. Positioning the mesa edge at the waveguide edge within 1-µm accuracy results in waveguide outputs of about 0.7 and 0.02% of that inside the active region for TE- and TM-HCG-VCSEL, respectively.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E97.C.369/_p

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@ARTICLE{e97-c_4_369,
author={Yoshihiro TSUNEMI, Kazuhiro IKEDA, Hitoshi KAWAGUCHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Analysis of Optical Output Characteristics in Waveguide Coupled HCG-VCSELs},
year={2014},
volume={E97-C},
number={4},
pages={369-376},
abstract={We numerically investigated the optical output characteristics in two kinds of optical waveguide coupled high-index-contrast subwavelength grating VCSELs (HCG-VCSELs) that couple the laser output to the in-plane waveguide, operating at a 1.55-µm region. One is the transverse electric (TE) HCG, and the other is the transverse magnetic (TM) HCG. In a waveguide coupled HCG without a cavity structure, the out-coupling efficiency to the waveguide strongly depends on the intensity of the incident light at the starting edge of the waveguide. In a waveguide coupled HCG-VCSEL, the ratio of the waveguide output to the optical power inside the active region is determined also by the intensity of the resonant mode at the waveguide edge. The TE-HCG-VCSEL exhibited an almost 30 times larger waveguide output power while the quality factor of the laser cavity is 1/3, compared to those in the TM-HCG-VCSEL. The single mode condition was satisfied for the waveguide of the TE-HCG-VCSEL while the first order mode was allowed for that of the TM-HCG-VCSEL. Positioning the mesa edge at the waveguide edge within 1-µm accuracy results in waveguide outputs of about 0.7 and 0.02% of that inside the active region for TE- and TM-HCG-VCSEL, respectively.},
keywords={},
doi={10.1587/transele.E97.C.369},
ISSN={1745-1353},
month={April},}

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TY - JOUR
TI - Analysis of Optical Output Characteristics in Waveguide Coupled HCG-VCSELs
T2 - IEICE TRANSACTIONS on Electronics
SP - 369
EP - 376
AU - Yoshihiro TSUNEMI
AU - Kazuhiro IKEDA
AU - Hitoshi KAWAGUCHI
PY - 2014
DO - 10.1587/transele.E97.C.369
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E97-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2014
AB - We numerically investigated the optical output characteristics in two kinds of optical waveguide coupled high-index-contrast subwavelength grating VCSELs (HCG-VCSELs) that couple the laser output to the in-plane waveguide, operating at a 1.55-µm region. One is the transverse electric (TE) HCG, and the other is the transverse magnetic (TM) HCG. In a waveguide coupled HCG without a cavity structure, the out-coupling efficiency to the waveguide strongly depends on the intensity of the incident light at the starting edge of the waveguide. In a waveguide coupled HCG-VCSEL, the ratio of the waveguide output to the optical power inside the active region is determined also by the intensity of the resonant mode at the waveguide edge. The TE-HCG-VCSEL exhibited an almost 30 times larger waveguide output power while the quality factor of the laser cavity is 1/3, compared to those in the TM-HCG-VCSEL. The single mode condition was satisfied for the waveguide of the TE-HCG-VCSEL while the first order mode was allowed for that of the TM-HCG-VCSEL. Positioning the mesa edge at the waveguide edge within 1-µm accuracy results in waveguide outputs of about 0.7 and 0.02% of that inside the active region for TE- and TM-HCG-VCSEL, respectively.
ER -