LASER DIODE DRIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To suppress intersymbol interference even when a transmission rate increases in the transmission of an optical signal by using a laser diode. Ž

SOLUTION: A laser diode driving device includes: an MPG 121 generating a modulation current signal (IM) according to an input signal; an edge detector (ED) 124 detecting a rise and a fall of the input signal; an REPG 122 generating a rising emphasis pulse signal (IRE) according to a pulse signal (VRE) based on a rise detection result obtained by the edge detector 124; and an FEPG 123 generating a falling emphasis pulse signal (IFE) according to a pulse signal (VFE) based on a fall detection result obtained by the edge detector 124. A signal obtained by combining the modulation current signal (IM), the rising emphasis pulse signal (IRE) and the falling emphasis pulse signal (IFE) is supplied as a driving current signal (IOUT) to a laser diode 110. Ž

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