Alcatel 1916 LMM
2.5 Gbit/s digital Laser Module with
integrated electro-absorption Modulator
Description
This Alcatel 1916 LMM contains an Alcatel
DFB laser with monolithically integrated
electro-absorption modulator (ILM). This
chip provides much lower dispersion
penalties than a directly modulated DFB,
without the complexity of LiNbO3 external
modulators. The Alcatel 1916 LMM is
optimized for ultra long-haul transmission
systems using non-dispersion shifted and
optical fiber amplifiers.
Features
•
•
•
•
•
•
•
Very low dispersion penalty over 750km for
2.5 Gbit/s operation
InGaAsP monolithically integrated DFB laser and
modulator chip
High frequency butterfly package with
50
Ω
RF impedance matching and DC bias RF
filtering
Low drive voltage (≤ 2 Vpp)
Internal optical isolator
High power available
STM-16 and OC-48 ultra long-haul
transmission systems
Terminals for submarine transmission systems
Applications
•
•
Industry-standard 14-pin butterfly package
Optical characteristics
Parameter
Threshold current
Operating current
Optical output power
Laser forward voltage
Modulator bias voltage
Modulator drive voltage
Dynamic extinction ratio
Emission wavelength
Side mode suppression
Cut off frequency
RF return loss
Dispersion penalty
Tracking error
Symb.
I
th
Iop
P
AVE
V
F
V
bias
V
mod
DER
λm
SMSR
S21
S11
∆s
TR
Conditions
CW, V
bias
= 0 V
CW, V
bias
= 0 V
I
op
, V
mod
, [1]
CW, I
op
, V
bias
= 0 V
See [1]
See [1]
See [1]
@ I
op
- 3 dB
DC to 3 GHz
See [1], [2]
Tsubmount = 25 °C, Tcase = 70°C
If = 100 mA, Q = 10 log [P(70 °C)/P(25 °C)]
Min
5
50
0
-2
10
1530
35
4
10
- 0.5
Typical
17
80
Max
35
100
2
0
2
1570
-1
1
11
2
0.5
Units
mA
mA
dBm
V
V
V
dB
nm
dB
GHz
dB
dB
dB
Rise time / Fall time
Tr/Tf
[1], 10%, 90%
70
125
ps
Optical return loss
Ol
Tc = - 5 to 70 °C
25
dB
Monitor diode current
I
m
I
op,
VM = - 5 V
0.2
0.5
1.5
mA
Dark current
I
d
0.1
µA
∆T=
45 °C, I
op
= 120 mA, T
C
= 70 °C, V
bias
= - 1 V
TEC current
I
t
1
1.2
A
∆T=
45 °C, I
op
= 120 mA, T
C
= 70 °C, V
bias
= - 1 V
TEC voltage
V
t
1.6
2.4
V
Thermistor resistance
R
TH
9.5
10.5
KΩ
Notes : All limits start of life, Tcase = 25 °C, Tsubmount = 25 °C, monitor bias = - 5 V, unless otherwise stated.
[1] BER = 10
-10
; 2.488 Gbit/s modulation; 2
23
-1 PRBS; NZR line code; DER≥10dB
[2] 7200 ps/nm dispersion, assuming fiber with an average dispersion of 18 ps/nm/km
Absolute maximum ratings
Parameters
Min
Max
Operating case temperature
-5
70
Storage temperature
-40
85
Laser forward current
150
Laser reverse voltage
2
Modulator forward voltage
1
Modulator reverse voltage
5
Photodiode forward current
1
Photodiode reverse voltage
20
TEC Voltage
2.8
TEC Current
1.4
ESD applied on modulator
500
ESD applied on laser [1]
2000
Lead soldering time (at 260°C)
10
Packing Mounting Screw Torque
0.2
[1] Human body model Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only.
Unit
°C
°C
mA
V
V
V
mA
V
V
A
V
V
s
nm
Mechanical details
September 00
Copyright © 2000
Alcatel Optronics
Customized versions
are available for
large quantities.
Performance figures contained
in this document must be
specifically confirmed in
writing by Alcatel Optronics
before they become applicable
to any particular order or
contract. Alcatel Optronics
reserves the right to make
changes to the products or
information contained herein
without notice.
Pin out
N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
Thermistor
Thermistor
Laser DC bias (+)
Photodetector Anode (-)
Photodetector Cathode (+)
TEC (+)
TEC (-)
Case Ground
Case Ground
Not Connected
Laser / modulator ground
Modulator Anode/50Ω RF input
Laser / modulator ground
Not Connected
EUROPE
Route de Villejust
F-91625 NOZAY CEDEX
Tel : (+33) 1 64 49 49 10
Fax : (+33) 1 64 49 49 61
USA
12030 Sunrise Valley Drive
RESTON - VA 2 2091
Tel : (+1) 703 715 3921
Fax : (+1) 703 860 1183
CANADA
45, De Villebois, suite 200
Gatineau (PQ)
Canada, J8T 8J7
Tel : (+1) 819 243 3755
Fax : (+1) 819 243 3354
JAPAN
Yebisu Garden Place Tower
PO Box 5024
20-3, Ebisu 4 - Chome
Shibuya - ku TOKYO 150 - 6028
Tel : (+81) 3 5424 85 65
Fax : (+81) 3 5424 85 81
Standards
ITU-T G.691
IEC 68-2 and MIL STD 883
environment
LASER RADIATION
AVOID EXPOSURE TO BEAM
Class 3 B laser product
Ordering information
Alcatel 1916 LMM
Application
12800 ps/nm
7200 ps/nm
4000 ps/nm
Part number
3CN00397AA
3CN00149AA
3CN00307AA
Connector
FC/PC
FC/PC
FC/PC
ATTENTION
OBSERVE
PRECAUTIONS FOR
HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE DEVICES
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