Cooling Fiber Laser Power Converter Systems by Immersion in Oil

We demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and 976 nm light propagating through oil show no de...

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Main Authors: Denis Masson, Simon Fafard
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Photonics
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Online Access:https://www.mdpi.com/2304-6732/12/5/431
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author Denis Masson
Simon Fafard
author_facet Denis Masson
Simon Fafard
author_sort Denis Masson
collection DOAJ
description We demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and 976 nm light propagating through oil show no degradation of components nor transmission losses from the oil for up to 1000 h. The operation of a bare die designed for use with 1040–1080 nm light and in direct contact with oil is also shown to be feasible. We discuss how the use of transformer oil can be beneficial to transfer excess heat away from LPCs in special applications.
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spelling doaj-art-6416d29777ba4b51a0e2b8964d4d2b6e2025-08-20T02:34:01ZengMDPI AGPhotonics2304-67322025-04-0112543110.3390/photonics12050431Cooling Fiber Laser Power Converter Systems by Immersion in OilDenis Masson0Simon Fafard1Broadcom (Canada), Industrial Fiber Product Division (IFPD), Ottawa, ON K1A 0R6, CanadaBroadcom (Canada), Industrial Fiber Product Division (IFPD), Ottawa, ON K1A 0R6, CanadaWe demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and 976 nm light propagating through oil show no degradation of components nor transmission losses from the oil for up to 1000 h. The operation of a bare die designed for use with 1040–1080 nm light and in direct contact with oil is also shown to be feasible. We discuss how the use of transformer oil can be beneficial to transfer excess heat away from LPCs in special applications.https://www.mdpi.com/2304-6732/12/5/431power over fiberoptical power converterslaser power convertersphotovoltaic multijunctionsgalvanic isolationGaAs
spellingShingle Denis Masson
Simon Fafard
Cooling Fiber Laser Power Converter Systems by Immersion in Oil
Photonics
power over fiber
optical power converters
laser power converters
photovoltaic multijunctions
galvanic isolation
GaAs
title Cooling Fiber Laser Power Converter Systems by Immersion in Oil
title_full Cooling Fiber Laser Power Converter Systems by Immersion in Oil
title_fullStr Cooling Fiber Laser Power Converter Systems by Immersion in Oil
title_full_unstemmed Cooling Fiber Laser Power Converter Systems by Immersion in Oil
title_short Cooling Fiber Laser Power Converter Systems by Immersion in Oil
title_sort cooling fiber laser power converter systems by immersion in oil
topic power over fiber
optical power converters
laser power converters
photovoltaic multijunctions
galvanic isolation
GaAs
url https://www.mdpi.com/2304-6732/12/5/431
work_keys_str_mv AT denismasson coolingfiberlaserpowerconvertersystemsbyimmersioninoil
AT simonfafard coolingfiberlaserpowerconvertersystemsbyimmersioninoil