Direct modulation type optical module

摘要: PROBLEM TO BE SOLVED: To increase an eye aperture in pattern for lengthening transmission distance a direct modulation type optical module. SOLUTION: In input current drive to be inputted semiconductor laser, the rate of change (inclination) fall time is set smaller than that rise time. Additionally, overshooting made transition state at least by rising. COPYRIGHT: (C)2004,JPO&NCIPI