Design of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated (APM) Gratings

Kenji SATO; Yoshiharu MUROYA; Tetsuro OKUDA

Design of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated (APM) Gratings

Kenji SATO, Yoshiharu MUROYA, Tetsuro OKUDA

Full Text Views

0

Cite this

Summary :

A theoretical study on high slope-efficiency phase-shifted DFB laser diodes is presented. We have proposed a new grating structure called asymmetrically-pitch-modulated (APM) grating, and calculated its slope- efficiency and single-mode-yield. In order to take into account the modulated grating period; we have developed an F-matrix which directly includes a chirped grating structure. APM phase-shifted DFB laser diodes consist of a uniform grating in one half section of the cavity and a chirped grating in the other half. This structure causes asymmetrical field distribution inside the cavity and the optical output power from one facet is larger than that from the other facet. According to the simulation results, when the normalized coupling coefficient κ L is 3.0, the front-to-rear output power ratio is 2.6, while the single-mode-yield remains at 100%, and simultaneously the slope-efficiency improvement becomes 65% better than that of ordinary quarter-wave phase-shifted DFB lasers of the same κ L value.

Publication: IEICE TRANSACTIONS on Electronics Vol.E83-C No.6 pp.855-859

Publication Date: 2000/06/25

Publicized

Online ISSN

DOI

Type of Manuscript: Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)

Category: Semiconductor Lasers

Cite this

Copy

Kenji SATO, Yoshiharu MUROYA, Tetsuro OKUDA, "Design of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated (APM) Gratings" in IEICE TRANSACTIONS on Electronics, vol. E83-C, no. 6, pp. 855-859, June 2000, doi: .
Abstract: A theoretical study on high slope-efficiency phase-shifted DFB laser diodes is presented. We have proposed a new grating structure called asymmetrically-pitch-modulated (APM) grating, and calculated its slope- efficiency and single-mode-yield. In order to take into account the modulated grating period; we have developed an F-matrix which directly includes a chirped grating structure. APM phase-shifted DFB laser diodes consist of a uniform grating in one half section of the cavity and a chirped grating in the other half. This structure causes asymmetrical field distribution inside the cavity and the optical output power from one facet is larger than that from the other facet. According to the simulation results, when the normalized coupling coefficient κ L is 3.0, the front-to-rear output power ratio is 2.6, while the single-mode-yield remains at 100%, and simultaneously the slope-efficiency improvement becomes 65% better than that of ordinary quarter-wave phase-shifted DFB lasers of the same κ L value.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_6_855/_p

Copy

@ARTICLE{e83-c_6_855,
author={Kenji SATO, Yoshiharu MUROYA, Tetsuro OKUDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Design of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated (APM) Gratings},
year={2000},
volume={E83-C},
number={6},
pages={855-859},
abstract={A theoretical study on high slope-efficiency phase-shifted DFB laser diodes is presented. We have proposed a new grating structure called asymmetrically-pitch-modulated (APM) grating, and calculated its slope- efficiency and single-mode-yield. In order to take into account the modulated grating period; we have developed an F-matrix which directly includes a chirped grating structure. APM phase-shifted DFB laser diodes consist of a uniform grating in one half section of the cavity and a chirped grating in the other half. This structure causes asymmetrical field distribution inside the cavity and the optical output power from one facet is larger than that from the other facet. According to the simulation results, when the normalized coupling coefficient κ L is 3.0, the front-to-rear output power ratio is 2.6, while the single-mode-yield remains at 100%, and simultaneously the slope-efficiency improvement becomes 65% better than that of ordinary quarter-wave phase-shifted DFB lasers of the same κ L value.},
keywords={},
doi={},
ISSN={},
month={June},}

Copy

TY - JOUR
TI - Design of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated (APM) Gratings
T2 - IEICE TRANSACTIONS on Electronics
SP - 855
EP - 859
AU - Kenji SATO
AU - Yoshiharu MUROYA
AU - Tetsuro OKUDA
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2000
AB - A theoretical study on high slope-efficiency phase-shifted DFB laser diodes is presented. We have proposed a new grating structure called asymmetrically-pitch-modulated (APM) grating, and calculated its slope- efficiency and single-mode-yield. In order to take into account the modulated grating period; we have developed an F-matrix which directly includes a chirped grating structure. APM phase-shifted DFB laser diodes consist of a uniform grating in one half section of the cavity and a chirped grating in the other half. This structure causes asymmetrical field distribution inside the cavity and the optical output power from one facet is larger than that from the other facet. According to the simulation results, when the normalized coupling coefficient κ L is 3.0, the front-to-rear output power ratio is 2.6, while the single-mode-yield remains at 100%, and simultaneously the slope-efficiency improvement becomes 65% better than that of ordinary quarter-wave phase-shifted DFB lasers of the same κ L value.
ER -