Uittreksel
Step-wise tuning of a monolithically integrated widely tunable continuous wave semiconductor ring laser is investigated, for application in Fourier domain optical coherence tomography (OCT). The device operates around 1530 nm and was realized on an InP generic photonic integration technology platform. The laser is tuned using voltage-controlled electrooptic phase modulators with <100 μW thermal dissipation, which reduces time dependent thermal effects in the filter. Here we present a calibration method with progressively finer wavelength control steps and discuss the limits of wavelength accuracy and repeatability with respect to OCT requirements. It is shown that thermal effects due to light absorption in the phase modulators have a negligible effect on the tuning of the laser for six out of seven phase modulators. To bring the thermal dissipation of the seventh phase modulator in line with the others a design change is proposed. Wavelength switching dynamics are investigated with a numerical model of the laser. A simulation based on this model shows that it takes around 50 ns from the wavelength switching instant to establish a single mode operation with side mode suppression ratio of 30 dB.
| Originele taal-2 | Engels |
|---|---|
| Titel | Novel In-Plane Semiconductor Lasers XVIII |
| Redacteuren | Peter M. Smowton, Alexey A. Belyanin |
| Uitgeverij | SPIE |
| Aantal pagina's | 8 |
| Volume | 10939 |
| ISBN van elektronische versie | 9781510625204 |
| DOI's | |
| Status | Gepubliceerd - 1 jan 2019 |
| Evenement | Novel In-Plane Semiconductor Lasers XVIII 2019 - San Francisco, Verenigde Staten van Amerika Duur: 4 feb 2019 → 7 feb 2019 |
Congres
| Congres | Novel In-Plane Semiconductor Lasers XVIII 2019 |
|---|---|
| Land | Verenigde Staten van Amerika |
| Stad | San Francisco |
| Periode | 4/02/19 → 7/02/19 |
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Tuning of a widely tunable monolithically integrated InP laser for optical coherence tomography. / Pajković, Rastko; Tian, Yu; Latkowski, Sylwester; Williams, Kevin; Bente, Erwin.
Novel In-Plane Semiconductor Lasers XVIII. redactie / Peter M. Smowton; Alexey A. Belyanin. Vol. 10939 SPIE, 2019. 1093912.Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review
TY - GEN
T1 - Tuning of a widely tunable monolithically integrated InP laser for optical coherence tomography
AU - Pajković, Rastko
AU - Tian, Yu
AU - Latkowski, Sylwester
AU - Williams, Kevin
AU - Bente, Erwin
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Step-wise tuning of a monolithically integrated widely tunable continuous wave semiconductor ring laser is investigated, for application in Fourier domain optical coherence tomography (OCT). The device operates around 1530 nm and was realized on an InP generic photonic integration technology platform. The laser is tuned using voltage-controlled electrooptic phase modulators with <100 μW thermal dissipation, which reduces time dependent thermal effects in the filter. Here we present a calibration method with progressively finer wavelength control steps and discuss the limits of wavelength accuracy and repeatability with respect to OCT requirements. It is shown that thermal effects due to light absorption in the phase modulators have a negligible effect on the tuning of the laser for six out of seven phase modulators. To bring the thermal dissipation of the seventh phase modulator in line with the others a design change is proposed. Wavelength switching dynamics are investigated with a numerical model of the laser. A simulation based on this model shows that it takes around 50 ns from the wavelength switching instant to establish a single mode operation with side mode suppression ratio of 30 dB.
AB - Step-wise tuning of a monolithically integrated widely tunable continuous wave semiconductor ring laser is investigated, for application in Fourier domain optical coherence tomography (OCT). The device operates around 1530 nm and was realized on an InP generic photonic integration technology platform. The laser is tuned using voltage-controlled electrooptic phase modulators with <100 μW thermal dissipation, which reduces time dependent thermal effects in the filter. Here we present a calibration method with progressively finer wavelength control steps and discuss the limits of wavelength accuracy and repeatability with respect to OCT requirements. It is shown that thermal effects due to light absorption in the phase modulators have a negligible effect on the tuning of the laser for six out of seven phase modulators. To bring the thermal dissipation of the seventh phase modulator in line with the others a design change is proposed. Wavelength switching dynamics are investigated with a numerical model of the laser. A simulation based on this model shows that it takes around 50 ns from the wavelength switching instant to establish a single mode operation with side mode suppression ratio of 30 dB.
KW - Indium Phosphide
KW - Photonic integration
KW - Ring laser
KW - Swept source optical coherence tomography
KW - Widely tunable laser
UR - http://www.scopus.com/inward/record.url?scp=85065639170&partnerID=8YFLogxK
U2 - 10.1117/12.2509572
DO - 10.1117/12.2509572
M3 - Conference contribution
AN - SCOPUS:85065639170
VL - 10939
BT - Novel In-Plane Semiconductor Lasers XVIII
A2 - Smowton, Peter M.
A2 - Belyanin, Alexey A.
PB - SPIE
ER -