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Guide to Selecting a Bias-T Laser Diode Mount

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Guide to Selecting a Bias-T Laser Diode Mount

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This Tech Note discusses the differences between the three Bias-T mount options offered by ILX Lightwave. The Bias-T mounts allow butterfl y and DIL lasers without internal Bias-T circuitry to be modulated from 10 MHz to 800 MHz. If the laser package has an internal Bias-T or electroabsorption modulator, then the LDM-4984RF or LDM-4984EA mount is appropriate A “Bias-T” is a three-terminal circuit used to combine a high frequency AC signal to a DC signal into a single output. The frequency response with the Bias-T depends on component selection, so the Bias-T must be properly tuned for the range of operation.

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