MITSUBISHI LASER DIODES ML7XX14 SERIES InGaAsP DFB-LASER DIODES TYPE NAME ML725B14F DESCRIPTION FEATURES ML7XX14 series are MQW*-DFB** laser diodes emitting light beam around 1310nm. They are well suited for light source in long distance analog transmission system for example cable television (CATV). The ML7XX14 is able to operate in wide temperature rang from -40C to +85C ML725B14F are hermetically sealed devices with the photo diode for optical output monitoring. Excellent low distortion characteristic CSO (typ. -50dBc) CTB (typ. -55dBc) Modulation depth m = 3.5%/channel Po > 5mW 20 km single mode fiber Low relative intensity noise characteristic (typ. -155dB/Hz) Low threshold current (Max. 20mA@25C) High slope efficiency (Min. 0.3mW/mA@25C) High side mode suppression ratio (typ. 40dB) * MQW : Multiple Quantum Well ** DFB : Distributed Feedback APPLICATION Analog optical communications, such as CATV ABSOLUTE MAXIMUM RATINGS Symbol Po Parameter Ratings Conditions CW Light output power 8 Unit mW mA Forward current (Laser diode) - 150 VRL Reverse voltage (Laser diode) - 2 V VRD IFD Reverse voltage (Photo diode) 20 V Forward current (Photo diode) - 2 mA Case temperature - - 40 to +85 C Storage temperature - - 40 to +100 C Iop Tc Tstg ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=25C Symbol Parameter Test conditions Min. Typ. Max Unit Ith Threshold current CW CW, Tc=85C - 6 30 20 40 mA Iop Operation current CW,Po=5mW CW,Po=5mW, Tc=85C - 18 50 40 75 mA Vop Operating voltage CW,Po=5mW - 1.2 1.8 V p Slope efficiency CW,Po=5mW 0.3 - - mW/mA 1290 1310 1330 nm Peak wavelength CW,Po=5mW, Tc=-40 to +85C Beam divergence angle (Full angle at half maximum) CW,Po=5mW - 25 35 CW,Po=5mW - 30 40 Side mode suppression ratio CW,Po=5mW , Tc=-40 to +85C 30 40 - CSO Composite second order - -50 -42 CTB Composite triple beat 78 channel transmission test modulation depth m=3.5%, Po>5mW, 20Km SMF Tc=-40 to 85C - -55 -46 RIN Relative intensity noise CW,Po=5mW - -155 - dB/Hz Im Monitoring output current CW,Po=5mW 0.05 0.2 - mA SMSR MITSUBISHI ELECTRIC deg. dB dB JAN. 2002 MITSUBISHI LASER DIODES ML7XX14 SERIES InGaAsP DFB-LASER DIODES OUTLINE DRAWINGS mm +0 5.6 -0.03 ML725B14F 4.25 3.550.1 (0.25) (1) (4) (4) Case PD LD 2.0Min. 1.0Min. 0.1 2.10.15 1.2 1.270.03 0.250.03 Glass 10.1 18 1 (3) (2) (0.25) 2-90 (3) Emitting Facet (2) (1) Reference Plane ML725B14F 2.00.25 (P.C.D.) 4-0.450.05 (1) (2) JAN. 2002