L8231 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Receptacle type, 1.3 μm, 1.25, 2.5 Gbps

LASER DIODE
Laser diode
L8231/L7551 series
Receptacle type, 1.3 µm, 1.25, 2.5 Gbps
L8231 and L7551 series are high-speed infrared emitters specifically developed for 1.3 µm band optical fiber communications. These devices
incorporate a high-speed Fabry-Perot laser diode integrated in a receptacle module. Packages are available with various connectors and
mounting styles.
Features
l High-speed Fabry-Perot laser diode
L8231 series: 1.25 Gbps
L7551 series: 2.5 Gbps
l Compatible with single/multi mode optical fibers
Applications
l Optical fiber communications
l Fiber channel
l Gigabit ethernet
l HDTV
l SDH
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Forward current
IF
Reverse voltage (laserdiode)
Reverse voltage (photodiode)
Operating temperature
Storage temperature
*1: Duty ratio 50 %
VR
VRm
Topr
Tstg
L8231 series
Ith + 14 (DC)
Ith + 28 (pulse) *¹
2
20
-20 to +70
-40 to +70
L7551 series
Ith + 16 (DC)
Ith + 32 (pulse) *¹
s Electrical and optical characteristics (Typ. Ta=25 °C, IF=Ith +10 mA)
Parameter
Symbol
L8231 series
L7551 series
Peak wavelength
λp
1.31
1.31
Forward voltage
VF
1.1
1.1
Threshold current
Ith
6
9
Fiber end output *²
PF
0.2
0.2
Rise time
tr
250
200
Data rate
B
1.25
2.5
Monitor current (photodiode)
Im
0.4
0.5
*2: Measured using a single-mo d e optical fiber (mod e field diam eter 9.5 µm) w ith a master plu g.
Unit
mA
mA
V
V
°C
°C
Unit
µm
V
mA
mW
ps
Gbps
mA
s Package lineup
Parameter
Mounting style
Connector
Dimensional outline
L8231/L7551
-21
-22
-23
-32
-44
Board
Panel
Board & panel
SC
FC
MU
FC
LC
➀
➁
➂
➃
➄
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