MITSUBISHI

MITSUBISHI LASER DIODESML3XX1 SERIESFOR OPTICAL INFORMATION SYSTEMSII Forward current va. voltageTypical forward current vs. voltage characteristics areshown in Fig.4. In general, as the case temperaturerises, the forward voltage VF decreases slightly againstthe constant current IF. VF varies typically at a rateof - 2.0mV/oC at IF = 1 mA.~.§..!!oE~:JU"EE0...Fig. 4 Forward current vs. voltage40302010a oTc=50C"'" "" 25'C)1.0 2.0Forward voltage VF 01)II Optical output dependence of emission spectraTypical emission spectrum under CW operation areshown in Fig.5. In general, at an output of 3mW, singlemode is observed. The peak wavelength dependson the operating case temperature and forwardcurrent (output level).Fig. 5 Emission spectra under CW operationTc = 25"CXl3mWX1.6 III 2mWX16 ..dII lmWX16Ith840 850 860Wavelength A (nm)m Temperature dependence of peak wavelengthA typical temperature dependence of the peakwavelength at an, output of CW, 3mW is shown inFig.6.As the temperature rises, the peak wavelengthshifts to the long wavelength side at a rate ofabout O.25nm/oC typical.Fig .. 6 Temperature dependence of peak wavelength813E 812581 1.t:a;j ., 810~"'"Po=3mW1. 809~/,-r-l-1I80825 30 3540Case temperature Tc ("C)• MITSUBISHI..... ELECTRIC 2 -13