Optical design of distributed feedback lasers-on-thin-film-silicon

Vivek Krishnamurthy; Qian Wang; Jing Pu; Ter Hoe Loh; Seng Tiong Ho

doi:10.1109/LPT.2013.2257719

Optical design of distributed feedback lasers-on-thin-film-silicon

Vivek Krishnamurthy, Qian Wang, Jing Pu, Ter Hoe Loh, Seng Tiong Ho

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We design and theoretically evaluate the performance of a novel distributed feedback (DFB) laser-on-thin-film-silicon through its coupling coefficient, threshold current, and slope efficiency. In the DFB laser-on-thin-film-silicon, the optical mode is confined and guided by the narrow III-V-based epi-layers, resulting in an optical field confinement of ∼15\%$. Hence, through the variation of the width of the epi-layers, the optical mode-overlap with the gratings etched on the silicon could be changed. This changes the coupling coefficient of the DFB laser, providing a superior flexibility in reducing the threshold current and increasing the slope efficiency of the laser by ∼ 3× to 4×, in comparison with the previous work on DFB laser-on-silicon.

Original language	English (US)
Article number	6497499
Pages (from-to)	944-947
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	25
Issue number	10
DOIs	https://doi.org/10.1109/LPT.2013.2257719
State	Published - 2013

Keywords

Distributed feedback structure
laser
silicon evanescent platform
silicon photonics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Access to Document

10.1109/LPT.2013.2257719

Cite this

@article{7a5504183682495a82a9522660a79307,

title = "Optical design of distributed feedback lasers-on-thin-film-silicon",

abstract = "We design and theoretically evaluate the performance of a novel distributed feedback (DFB) laser-on-thin-film-silicon through its coupling coefficient, threshold current, and slope efficiency. In the DFB laser-on-thin-film-silicon, the optical mode is confined and guided by the narrow III-V-based epi-layers, resulting in an optical field confinement of ∼15\%$. Hence, through the variation of the width of the epi-layers, the optical mode-overlap with the gratings etched on the silicon could be changed. This changes the coupling coefficient of the DFB laser, providing a superior flexibility in reducing the threshold current and increasing the slope efficiency of the laser by ∼ 3× to 4×, in comparison with the previous work on DFB laser-on-silicon.",

keywords = "Distributed feedback structure, laser, silicon evanescent platform, silicon photonics",

author = "Vivek Krishnamurthy and Qian Wang and Jing Pu and Loh, {Ter Hoe} and Ho, {Seng Tiong}",

year = "2013",

doi = "10.1109/LPT.2013.2257719",

language = "English (US)",

volume = "25",

pages = "944--947",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "10",

}

TY - JOUR

T1 - Optical design of distributed feedback lasers-on-thin-film-silicon

AU - Krishnamurthy, Vivek

AU - Wang, Qian

AU - Pu, Jing

AU - Loh, Ter Hoe

AU - Ho, Seng Tiong

PY - 2013

Y1 - 2013

N2 - We design and theoretically evaluate the performance of a novel distributed feedback (DFB) laser-on-thin-film-silicon through its coupling coefficient, threshold current, and slope efficiency. In the DFB laser-on-thin-film-silicon, the optical mode is confined and guided by the narrow III-V-based epi-layers, resulting in an optical field confinement of ∼15\%$. Hence, through the variation of the width of the epi-layers, the optical mode-overlap with the gratings etched on the silicon could be changed. This changes the coupling coefficient of the DFB laser, providing a superior flexibility in reducing the threshold current and increasing the slope efficiency of the laser by ∼ 3× to 4×, in comparison with the previous work on DFB laser-on-silicon.

AB - We design and theoretically evaluate the performance of a novel distributed feedback (DFB) laser-on-thin-film-silicon through its coupling coefficient, threshold current, and slope efficiency. In the DFB laser-on-thin-film-silicon, the optical mode is confined and guided by the narrow III-V-based epi-layers, resulting in an optical field confinement of ∼15\%$. Hence, through the variation of the width of the epi-layers, the optical mode-overlap with the gratings etched on the silicon could be changed. This changes the coupling coefficient of the DFB laser, providing a superior flexibility in reducing the threshold current and increasing the slope efficiency of the laser by ∼ 3× to 4×, in comparison with the previous work on DFB laser-on-silicon.

KW - Distributed feedback structure

KW - laser

KW - silicon evanescent platform

KW - silicon photonics

UR - http://www.scopus.com/inward/record.url?scp=84877766448&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877766448&partnerID=8YFLogxK

U2 - 10.1109/LPT.2013.2257719

DO - 10.1109/LPT.2013.2257719

M3 - Article

AN - SCOPUS:84877766448

SN - 1041-1135

VL - 25

SP - 944

EP - 947

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 10

M1 - 6497499

ER -

Optical design of distributed feedback lasers-on-thin-film-silicon

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this