Abstract
High-performance optical power converters (OPCs) enable isolated electrical power and power beaming applications at new wavelengths and higher output powers. Broadcom’s vertical epitaxial heterostructure architecture (VEHSA) multi-junction OPCs permit optical-to-electrical conversion at high efficiency and at manageable external loads. This study provides details of how the power outputs have been extended from <1 W to a power class at ~3 W and another class at >20 W. The work also provides details of how the spectral range options have been extended from 800–830 nm to other key laser diode wavelengths such as 960–990 nm and 1500–1600 nm.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
For the device design intended for operation with an optical input originating from a laser source in the 800–830 nm spectral range, the results presented in this study are based on vertical epitaxial heterostructure architecture (VEHSA) structures utilizing GaAs absorber layers for the emitters (Si doped) and the bases (Zn doped) of all the subcells
We classify the optical power converters (OPCs) in three groups according to their form-factor and their related output power capabilities: regular-power, medium-power, and high-power
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Key advancements have been demonstrated in OPCs for power links and radio-over-fiber [1,2], long-distance and safe laser power beaming [3], power electronics, and other applications [4]. We have previously shown that the required high conversion efficiencies are best achieved using Broadcom’s patented multi-junction VEHSA design [5,6,7]. For output powers below 1 W (here designated as ‘regular power’), the OPC devices can be tailored to output voltages ranging from 4 V to 30 V with conversion efficiencies up to >60%. Broadcom has been selling the 4 V and 6 V OPCs as ‘released products’
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