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Description
This Alcatel 1916 LMM contains an Alcatel
DFB laser with monolithically integrated
electro-absor ption modulator (ILM). This
chip provides much lower dispersion
penalties than a directly modulated DFB,
without the complexity of LiN bO3 external
modulators. The Alcatel 1916 LMM is
optimized for ultra long-haul transmission
systems using non-dispersion shifted and
optical fiber amplifiers.
Features
• Industry-standard 14-pin butterfly package
• 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 D C bias RF
filtering
• Low drive voltage ( ≤ 2 Vpp)
• Internal optical isolator
• High power available
Applications
• STM-16 and OC-48 ultra long-haul
transmission systems
• Terminals for submarine tr ansmission systems
Optical characteristics
Parameter Symb. Conditions Min Typical Max Units
Threshold current Ith CW, Vbias = 0 V 5 17 35 mA
Operating current Iop CW, Vbias = 0 V 50 80 100 mA
Optical output power PAVE Iop, Vmod, [1] -2 dBm
Laser forward voltage VF CW, Iop, Vbias = 0 V 2 V
Modulator bias voltage Vbias See [1] - 2 - 1 0 V
Modulator drive voltage Vmod See [1] 1 2 V
Dynamic extinction ratio DER See [1] 10 dB
Emission wavelength λm 1530 1570 nm
Side mode suppr ession SMSR @ Iop 35 dB
Cut off fr equency S21 - 3 dB 4 GHz
RF return loss S11 DC to 3 GHz 10 11 dB
Dispersion penalty ∆s See [1], [2 ] 2 dB
Tracking error TR Tsubmount = 25 °C, Tcase = 70°C
If = 100 mA, Q = 10 log [P(70 °C)/P(25 °C)] - 0.5 0.5 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 Im Iop, VM = - 5 V 0.2 0.5 1.5 mA
Dark current Id 0.1 µA
TEC current It∆T= 45 °C, Io
p
= 120 mA, TC= 70 °C, Vbias= - 1 V 1 1.2 A
TEC voltage Vt ∆T= 45 °C, Iop= 120 mA, TC= 70 °C, Vbias= - 1 V 1.6 2.4 V
Thermistor resistance RTH
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; 223-1 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 Unit
Operating case temperature - 5 70 °C
Storage temperature -40 85 °C
Laser forward current 150 mA
Laser reverse voltage 2V
Modulator forward voltage 1V
Modulator reverse voltage 5V
Photodiode forward current 1 mA
Photodiode reverse voltage 20 V
TEC Voltage 2.8 V
TEC Current 1.4 A
ESD applied on modulator 500 V
ESD applied on laser [1 ] 2000 V
Lead soldering time (at 260°C) 10 s
Packing Mounting Screw Torque 0.2 nm
[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.
A
lcatel 1916 L MM
2.5 Gbit/s digital Laser Module with
integrated electro-absorption Modulator
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Mechanical details
Pin out
N° Description
1Thermistor
2Thermistor
3 Laser DC bias (+)
4 Photodetector Anode (-)
5 Photodetector Cathode (+)
6TEC (+)
7TEC (-)
8 Case Ground
9 Case Ground
10 Not Connected
11 Laser / modulator ground
12 Modulator Anode/50Ω RF input
13 Laser / modulator ground
14 Not Connected
Ordering information
Alcatel 1916 LMM
Application Part number Connector
12800 ps/nm 3CN00397AA FC/PC
7200 ps/nm 3CN00149AA FC/PC
4000 ps/nm 3CN00307AA FC/PC
Standards
ITU-T G.691
IEC 68-2 and MIL STD 883
environment
LASER RADIATIO N
AVOID EXPOSURE TO BEAM
Class 3 B laser produc t
ATTENTION
OBSERVE
PRECAUTIONS FOR
HANDLING
ELECTROSTATIC
DISCHARGE
SENSITIVE DEVICES
January 2002
Copyright © 2002
Alcatel Optronics
Customized versions
are availabl e for
large quantities.
Performance figures contained
in this document must be
specifically confirmed in
writing by Alcatel Optronics
before they become applicable
to any parti cular order or
contract. Alcatel Optronics
reserves the right to make
changes to the products or
informati on contained herein
For additi onal information,
contact your Alcatel Optronics
Account Manager, or the
following :
INTERNET
http ://www.alcatel.com/optronics
E-MAIL
optronics@www.alcatel.com
EUROPE
France : (+33) 1 64 49 47 00
UK : (+44) 1506 42 60 00
USA
Chantilly – VA : (+1) 703 679 6715
Plano – TX : (+1) 972 477 54 53
CANADA
Gatineau : (+1) 819 243 3755
ASIA - PACIFIC
Japan : (+81) 3 5302 4341
China : (+86) 755 6981 471
