L8347 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Laser diode

LASER DIODE
Laser diode
L8347/L7892 series
Pigtail type, 1.3 µm, 1.25, 2.5 Gbps
L8347 and L7892 series are high-speed infrared emitter devices specifically developed for 1.3 µm band optical fiber communications. These
devices incorporate a high-speed Fabry-Perot laser diode integrated in a pig-tail module. Packages are available with various connectors and
mounting styles.
Features
l High-speed Fabry-Perot laser diode
L8347 series: 1.25 Gbps
L7892 series: 2.5 Gbps
l Compatible with single-mode optical fiber
Applications
l Optical fiber communications
l Fiber channel
l Gigabit ethernet
l HDTV
l SDH
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
L8347 series
L7892 series
Unit
Forward current
I.
Ith + 14 (DC)
Ith + 28 (pulse) *
Ith + 16 (DC)
mA
Ith + 32 (pulse) *
mA
Reverse voltage (laserdiode)
V4
2
V
Reverse voltage (photodiode)
V4m
20
V
Operating temperature
Topr
-20 to +70
°C
Storage temperature
Tstg
-40 to +70
°C
* Duty ratio: 50 %
s Electrical and optical characteristics (Typ. Ta=25 °C, I.=Ith +10 mA)
Parameter
Symbol
L8347 series
Peak wavelength
lp
1.31
Forward voltage
V.
1.1
Threshold current
Ith
6
Fiber end output
P.
0.1
Rise time
tr
250
Data rate
B
1.25
Monitor current (photodiode)
Im
0.4
L7892 series
1.31
1.1
9
0.3
200
2.5
0.5
Unit
µm
V
mA
mW
ps
Gbps
mA
s Package lineup
Configuration
Module
Mounting style
Dimensional outline
Fiber
Type
Length
Connector
Type
Dimensional outline
-11
-12
Coaxial
➀
SC
FC
➃
➄
L8347/L7892
-21
-22
Board
➁
SM (9.5/125) f0.9
1 m +20 cm/-0 cm
SC
FC
➃
➄
-31
-32
Panel
➂
SC
FC
➃
➄
1