Thermal Characterization of a Laser Diode and Its Peltier Cooler for Optical Communications: Measurements and Predictive Modeling

Fontaine, M.; Paris, B.; Grard, E.; Letteron, L.; Massiot, Michel; Tessier, Gilles

doi:10.1109/tcpmt.2012.2233546

“…In addition, TECs consume electrical power, which can dominate over the laser power consumption when the difference between the ambient temperature and the TEC set point becomes large. [2,3]. It is thus desirable to eliminate the TEC while keeping the laser wavelength independent of temperature, which is known as athermalisation.…”

Section: Introductionmentioning

confidence: 99%

Self-heating allows Athermal Laser Diode Wavelength Control using a Thermally Insulating Sub-mount over a 70 °C range

Mickus¹,

McKenna²,

Corbett³

et al. 2023

Preprint

0

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The wavelength of a single frequency quantum dot distributed feedback (DFB) laser operating in the O-band is athermalised over a 74 °C ambient temperature range. Two techniques are presented, one utilising the laser self-heating for tuning control, the other using a resistive heater. Both techniques show greatly improved power efficiency over conventional wavelength control schemes, and both demonstrate wavelength stability of better than 0.1 nm (17.5 GHz) without mode hops over the entire temperature range. The use of a high temperature quantum dot laser together with an innovative submount design to increase the thermal impedance of the device enables the improved use of the laser self-heating for wavelength tuning. The submount design entails the laser being suspended over an air gap with the use of glass supports, preventing heat from escaping from the diode.

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“…In addition, TECs consume electrical power, which can dominate over the laser power consumption when the difference between the ambient temperature and the TEC set point becomes large. [2,3]. It is thus desirable to eliminate the TEC while keeping the laser wavelength independent of temperature, which is known as athermalisation.…”

Section: Introductionmentioning

confidence: 99%

Self-heating allows Athermal Laser Diode Wavelength Control using a Thermally Insulating Sub-mount over a 70 °C range

Mickus¹,

McKenna²,

Corbett³

et al. 2023

Preprint

0

View full text Add to dashboard Cite

The wavelength of a single frequency quantum dot distributed feedback (DFB) laser operating in the O-band is athermalised over a 74 °C ambient temperature range. Two techniques are presented, one utilising the laser self-heating for tuning control, the other using a resistive heater. Both techniques show greatly improved power efficiency over conventional wavelength control schemes, and both demonstrate wavelength stability of better than 0.1 nm (17.5 GHz) without mode hops over the entire temperature range. The use of a high temperature quantum dot laser together with an innovative submount design to increase the thermal impedance of the device enables the improved use of the laser self-heating for wavelength tuning. The submount design entails the laser being suspended over an air gap with the use of glass supports, preventing heat from escaping from the diode.

show abstract