Power by light has been previously demonstrated with photodetectors whose open circuit voltage. V was approximately 1 volt and where the remote system voltage requirements were 1 to 2 vois. This paper explores the power by light cases where V is about 0.5 volt (e.g., silicon) and where the voltage requirement is about 5 voltsc(e.g., TTL or ECL compatibility).A hybrid power by light /DC -DC converter power supply is proposed for these cases and its performance is compared with the al] optical power by light power supply.
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