Monolithically-integrated multi-wavelength laser with optical feedback: damped relaxation oscillation dynamics and narrowed linewidth

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An InP-based, monolithically-integrated multi-wavelength laser with optical feedback is presented. We demonstrate performance of dual-wavelength operation. Single-mode lasing is obtained for each of the two channels over ranges of 14 °C and 40 mA without mode-hopping. This is due to the combined filtering functions of an arrayed waveguide grating and a distributed Bragg reflector. A method that makes use of weak optical feedback is demonstrated to improve the stability of each single-mode. With this method, sustained relaxation oscillations that are excited by on-chip parasitic reflections are damped and linewidths in both channels are narrowed to around 400 kHz compared to the linewidth of 1MHz which is obtained when no feedback is applied. The suppression ratio of the relaxation-oscillation-induced side peaks is measured to be over 45 dB for two simultaneously operated channels.

Originele taal-2Engels
Artikelnummer8493272
Aantal pagina's8
TijdschriftIEEE Photonics Journal
Volume10
Nummer van het tijdschrift6
DOI's
StatusGepubliceerd - dec 2018

Vingerafdruk

Optical feedback
Linewidth
Arrayed waveguide gratings
Distributed Bragg reflectors
Wavelength
oscillations
Lasers
wavelengths
lasers
Bragg reflectors
Feedback
lasing
chips
retarding
gratings
waveguides

Citeer dit

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title = "Monolithically-integrated multi-wavelength laser with optical feedback: damped relaxation oscillation dynamics and narrowed linewidth",
abstract = "An InP-based, monolithically-integrated multi-wavelength laser with optical feedback is presented. We demonstrate performance of dual-wavelength operation. Single-mode lasing is obtained for each of the two channels over ranges of 14 °C and 40 mA without mode-hopping. This is due to the combined filtering functions of an arrayed waveguide grating and a distributed Bragg reflector. A method that makes use of weak optical feedback is demonstrated to improve the stability of each single-mode. With this method, sustained relaxation oscillations that are excited by on-chip parasitic reflections are damped and linewidths in both channels are narrowed to around 400 kHz compared to the linewidth of 1MHz which is obtained when no feedback is applied. The suppression ratio of the relaxation-oscillation-induced side peaks is measured to be over 45 dB for two simultaneously operated channels.",
keywords = "arrayed waveguide grating, Arrayed waveguide gratings, distributed Bragg reflector, Laser feedback, Laser modes, linewidth, Optical feedback, optical feedback, Pump lasers, relaxation oscillation, Semiconductor laser, Semiconductor lasers, singlemode",
author = "Dan Zhao and Stefanos Andreou and Weiming Yao and Daan Lenstra and Kevin Williams and Xaveer Leijtens",
year = "2018",
month = "12",
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journal = "IEEE Photonics Journal",
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publisher = "Institute of Electrical and Electronics Engineers",
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T2 - damped relaxation oscillation dynamics and narrowed linewidth

AU - Zhao, Dan

AU - Andreou, Stefanos

AU - Yao, Weiming

AU - Lenstra, Daan

AU - Williams, Kevin

AU - Leijtens, Xaveer

PY - 2018/12

Y1 - 2018/12

N2 - An InP-based, monolithically-integrated multi-wavelength laser with optical feedback is presented. We demonstrate performance of dual-wavelength operation. Single-mode lasing is obtained for each of the two channels over ranges of 14 °C and 40 mA without mode-hopping. This is due to the combined filtering functions of an arrayed waveguide grating and a distributed Bragg reflector. A method that makes use of weak optical feedback is demonstrated to improve the stability of each single-mode. With this method, sustained relaxation oscillations that are excited by on-chip parasitic reflections are damped and linewidths in both channels are narrowed to around 400 kHz compared to the linewidth of 1MHz which is obtained when no feedback is applied. The suppression ratio of the relaxation-oscillation-induced side peaks is measured to be over 45 dB for two simultaneously operated channels.

AB - An InP-based, monolithically-integrated multi-wavelength laser with optical feedback is presented. We demonstrate performance of dual-wavelength operation. Single-mode lasing is obtained for each of the two channels over ranges of 14 °C and 40 mA without mode-hopping. This is due to the combined filtering functions of an arrayed waveguide grating and a distributed Bragg reflector. A method that makes use of weak optical feedback is demonstrated to improve the stability of each single-mode. With this method, sustained relaxation oscillations that are excited by on-chip parasitic reflections are damped and linewidths in both channels are narrowed to around 400 kHz compared to the linewidth of 1MHz which is obtained when no feedback is applied. The suppression ratio of the relaxation-oscillation-induced side peaks is measured to be over 45 dB for two simultaneously operated channels.

KW - arrayed waveguide grating

KW - Arrayed waveguide gratings

KW - distributed Bragg reflector

KW - Laser feedback

KW - Laser modes

KW - linewidth

KW - Optical feedback

KW - optical feedback

KW - Pump lasers

KW - relaxation oscillation

KW - Semiconductor laser

KW - Semiconductor lasers

KW - singlemode

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M3 - Article

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