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MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-22
1.55 mm DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
DESCRIPTION Mod ule type FU-68SDF-22 is a 1.55mm DFB-LD module with single-mode optical fiber. Th is mod ule is suitable to a light source for use in 2.5Gb/s digital optical communication systems. FEATURES Multi quantum wells (MQW) DFB Laser Diode module Input impedance is 25W Emission wavelength is in 1.55 mm band High-speed response Built-in optical isolator Built-in thermal electric cooler Butterfly package With photodiode for optical output monitor APPLICATION High speed transmission systems (~2.5Gb/s)
ABSOLUTE MAXIMUM RATINGS Parameter Laser diode
(Tld=25 C) Symbol Pf If Vrl Vrd Ifd Vpe Ipe Tc Tstg Conditions CW CW Rating 10 150 2 20 2 2.4 1.2 -20~+65 -40~+70 Unit mW mA V V mA V A C C
Optical output power from fiber end
Forword current Reverse voltage Photodiode for monitoring Cooler (Note) Reverse voltage Forward current Cooler voltage Cooler current
Operating case temperature Storage temperature
No te. Even if the thermo-electric cooler (TEC) is operated within the rate d conditions, uncontrolled current loading or operation without heatsink may easily damage the mod ule by exceeding the storage temperature range. Th ermistor resistan ce should be properly mon itored by the feedback circuit during TE C operation to avoid the catastrophic damage. .
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-22
1.55 mm DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
ELECTRICAL/OPTICAL CHARACTERISTICS Parameter Threshold current Operating current Operating Voltage Input impedance Optical output power from fib er end Light-emission central wevelength Spectral width (-20db full width) Symbol Ith Iop Vop Zin Pf c Dl CW CW CW,If=Iop (Note 1) If=Iop CW,If=Iop CW,If=Iop 2.5Gb/s NRZ Mark ratio 50% If_perk=Iop Extinction ratio 8% CW,If=Iop 2.48832Gbps NRZ PRBS 223 -1 If_peak=Iop Extinction ratio=10% 100km (1700ps/nm) (Note 2) If=Iop 2.5Gb/s NRZ Mark ratio 50% If_perk=Iop Extinction ratio 8% CW,If=Iop Tc=-20~+65 C,APC,ATC CW,If=Iop,Vrd=5V Vrd=5V Vrd=5V,f=1MHz (Tld=25 C,Tc=25 C, unless otherwise noted) Test Conditions Min. 4 1530 Limits Typ. 12 55 1.3 25 6 1550 0.2 Max. 40 90 1.8 1570 mA mA V W mW nm nm Unit
(Note 2) 33 40 2 dB dB
Side mode suppression ratio Dispersion penalty
Sr Pp
Cutoff frequency (-1,5dB optical) Rise and fall time (10~90%)
fc tr,tf
3.5 -
-
150
GHz ps
(Note 2) 0.09 0.1 -155 0.3 0.15 0.1 10 -145 0.35 1 dB/Hz dB mW/ mA mA mA pF
Relative intensity noise Tracking error (Note 3) Differential efficiency Monitor current Dark current (PD) Capacitance (PD)
Nr Er h Imon Id Ct
Note 1. If: LD forward current 2. Optical return loss of the connectors should be greater than 40dB in order to get the specified performance. 3.Er=MAX|10 log(Pf(Tc)/Pf(25 C))|
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-22
1.55mm DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
THERMAL CHARACTERISTICS (Tld=25 C,Tc=-20~+65 C) Parameter Thermistor resistance B constant of thermistor resistance Cooling capacity Cooler current Cooler Voltage Symbol Rth B DT Ipe Vpe Tc=65 C D T=40 C D T=40 C Test Conditions Min. Tld=25 C 9.5 40 Limits Typ. 10 3950 0.6 1.2 Max. 10.5 1 2 KW K C A V Unit
OPTICAL FIBER SPECIFICATION Parameter Type Mode filed dia. Cladding dia. Jacket dia. Limits SM 9.5 1 1252 0.9 typ. Unit mm mm
mm
MITSUBISHI (OPTICAL DEVICES)
FU-68SDF-22
1.55 mm DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)
OUTLINE DIAGRAM (Unit : mm)
FU-68SDF-22

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