What are the current and voltage ranges of the bias-T circuit?
Since the input stage of the bias-T is a bipolar transistor, applied voltage must be higher than about 0.6V to start bias current. The input stage has maximum voltage limit of 2.6V, but the laser itself may be destroyed at lower bias-T control voltage already, therefore the maximum rating has to be checked with the abovementioned rules and together with Alpes Lasers SA. The monitor output (if available) allows measurement of applied DC bias current: Its voltage divided by 10ohm gives bias current. In general, bias current can be in the range of 0.1A, but this must be checked with Alpes Lasers SA before. Avoid reverse polarity on the input!
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