TZ7-01-111B (1/6) June 20, 2001 Approved Approved Charged H.Koyanagi Specification of uncooled DFB-LD module Module type: FU-645SDF-x1Mxx ( Mitsubishi standard product ) A B x Date 20.June.’01 C D Approved Y.Hozumi MITSUBISHI ELECTRIC CORPORATION * Mitsubishi Electric Corp. reserves the right to change product design and specification without notice. TZ7-01-111B (2/6) MITSUBISHI (OPTICAL DEVICES) FU-645SDF-x1Mxx 1.55 µ m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION) DESCRIPTION Module type FU-645SDF-x1Mxx is a 1.55µm Uncooled DFB-LD module with single-mode optical fiber. This module is suitable to a light source for use in 2.5Gb/s digital optical communication systems. FEATURES l λ/4 shifted Multi quantum wells (MQW) DFB Laser Diode module l Input impedance is 25Ω l Emission wavelength is in 1.55µm band l High-speed response l Built-in optical isolator l Built-in thermistor and bias T l 8-pin Mini-DIL package with Gull wing leads l With photodiode for optical output monitor APPLICATION High speed transmission systems (~2.5Gb/s) ABSOLUTE MAXIMUM RATINGS (Tc=25°C) Parameter Symbol Laser diode Optical output Pf power Forward current If Reverse voltage Vrl Photodiode Reverse voltage Vrd Forward current Ifd Operating case temperature Tc Storage temperature Tstg Conditions CW Rating 6 Unit mW CW - 100 2 20 2 -5 ~ +70 -40 ~ +85 mA V V mA °C °C TZ7-01-111B (3/6) MITSUBISHI (OPTICAL DEVICES) FU-645SDF-x1Mxx 1.55 µ m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION) ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=-5~70°C, unless otherwise noted) Parameter Symbol Test Conditions Limits Unit Min. Typ. Max. Threshold current Ith CW, Tc=25°C 10 25 mA CW 2 40 µW Optical output power Pth CW, Ibias=Ith 50 at threshold current Operating current Iop CW, Pf=2mW, Tc=25°C 40 70 mA CW, Pf=2mW, Tc=70°C 60 90 Operating voltage Vop CW, Pf=2mW, Tc=25°C 1.2 1.5 V CW, Pf=2mW, Tc=70°C 1.6 1.8 Ω Input impedance Zin 25 Optical output power from Pf CW, nominal 2 mW fiber end λc Light-emission central CW, Pf=1mW 1530 1550 1570 nm wavelength λct Wavelength temperature 0.10 0.12 nm/°C coefficient ∆λ Spectral width (Note1), -20dB 0.4 nm Side mode suppression ratio Sr (Note1) 30 45 dB Cutoff frequency fc Pf=1mW 3.5 GHz (-1.5dB optical) Rise and fall time (10~90%) tr, tf (Note1) 125 150 psec Dispersion penalty Pp (Note1), +1800ps/nm disp. 2 dB Relative intensity noise Nr CW, Pf=1mW, f=1GHz -150 -140 dB/Hz Tracking error (Note 2) Er CW, APC(Imon=const.) 0.5 1.25 dB η Differential efficiency CW, Tc=25°C 0.06 0.1 mW/ mA CW 0.036 0.15 Monitor current Imon CW, Pf=1mW, Vrd=5V 0.05 1 mA Optical isolation Iso 20 dB µA Dark current (PD) Id Vrd=5V 0.1 Capacitance (PD) Ct Vrd=5V, f=1MHz 10 pF Thermistor resistance Rth Tc=25°C 9.5 10 10.5 kΩ B constant of Rth B 3950 K 23 Note 1) 2.48832Gb/s NRZ, 2 -1, Pf_ave=1mW, Extinction ratio 10dB, optical return loss from the line should be greater than 24dB in order to ensure the specified performance. Note 2) Er=max|10×log(Pf / Pf@25°C)| FIBER PIGTAIL SPECIFICATIONS Parameter Type Mode field diameter Cladding diameter Secondary coating outer diameter Connector Optical return loss of connector Limits SM 10± 1 125± 2 0.9 ± 0.1 See Table 1. 40 (min) Unit µm µm mm dB TZ7-01-111B (4/6) MITSUBISHI (OPTICAL DEVICES) FU-645SDF-x1Mxx 1.55 µ m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION) DOCUMENTATION • Threshold current (Ith) at Tc=25, 70°C • Operating current (Iop) at Tc=25, 70°C • Operating voltage (Vop) at Tc=25°C • Light-emission central wavelength (λc) at Tc=25°C • Monitor current (Imon) at Tc=25°C • Optical output power from fiber end (Pf) Table 1. Type number Connector type L (Note 3) Outline diagram FU-645SDF-1M1B None (Note 4) FU-645SDF-V1M1B FC/PC 28.4 (1) FU-645SDF-W1M1B SC/PC 34.5 FU-645SDF-1M2C None (Note 4) FU-645SDF-V1M2C FC/PC 28.4 (2) FU-645SDF-W1M2C SC/PC 34.5 Note 3) ‘L’ is defined in OUTLINE DIAGRAMs. Note 4) There are some cases where a connector for testing is shipped with the product. Then the fiber length not including the connector is more than 1000mm. TZ7-01-111B (5/6) MITSUBISHI (OPTICAL DEVICES) FU-645SDF-x1Mxx 1.55 µ m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION) OUTLINE DIAGRAM (1) (Unit : mm) 3 2 1 ← Pin No. Thermistor 4 PD 19Ω LD TOP VIEW 5 6 7 8 FU-645SDF-x1M1B PIN 1 2 3 4 5 6 7 8 FUNCTION THERMISTOR THERMISTER LD BIAS, CATHODE PD CATHODE PD ANODE LD ANODE LD RF, CATHODE LD ANODE TZ7-01-111B (6/6) MITSUBISHI (OPTICAL DEVICES) FU-645SDF-x1Mxx 1.55 µ m UNCOOLED DFB-LD MODULE WITH SINGLEMODE FIBER PIGTAIL (BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION) OUTLINE DIAGRAM (2) (Unit : mm) 3 2 1 ← Pin No. Thermistor 4 PD 19Ω LD TOP VIEW 5 6 7 8 FU-645SDF-x1M2C PIN 1 2 3 4 5 6 7 8 FUNCTION THERMISTOR THERMISTER LD BIAS, CATHODE PD CATHODE PD ANODE LD ANODE LD RF, CATHODE LD ANODE