Alca te l 1916 LMM
2.5 Gb it/ s d ig ita l La se r Mod ule with
in te g ra te d e le ctro-a b sorp tion Mod ula tor
•
•
•
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
De scrip tion
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.
•
•
•
High power available
Ap p lica tion s
•
STM-16 and OC-48 ultra long-haul
transmission systems
Fe a ture s
•
Terminals for submarine transmission systems
•
Industry-standard 14-pin butterfly package
Op tica l ch a ra cte ristics
Pa ra m e te r
Sym b .
Con d ition s
Min
Typ ica l Ma x
Un its
mA
mA
dBm
V
V
V
dB
nm
dB
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
I
CW, V = 0 V
5
50
0
17
80
35
100
th
bias
Iop
PAVE
CW, V = 0 V
bias
Iop, Vmod, [1]
V
CW, Iop, V = 0 V
2
0
2
F
bias
V
See [1]
See [1]
See [1]
- 2
- 1
1
bias
Vmod
DER
λm
SMSR
S21
S11
∆s
10
1530
35
4
10
1570
@ Iop
- 3 dB
DC to 3 GHz
GHz
dB
dB
RF return loss
Dispersion penalty
Tracking error
11
See [1], [2]
Tsubmount = 25 °C, Tcase = 70°C
If = 100 mA, Q = 10 log [P(70 °C)/P(25 °C)]
2
0.5
TR
- 0.5
dB
Rise time / Fall time
Optical return loss
Monitor diode current
Dark current
TEC current
TEC voltage
Tr/Tf
Ol
Im
[1], 10%, 90%
Tc = - 5 to 70 °C
Iop, VM = - 5 V
70
125
ps
dB
mA
µA
A
25
0.2
0.5
1.5
0.1
1.2
Id
∆T= 45 °C, Iop= 120 mA, TC= 70 °C, Vbias= - 1 V
∆T= 45 °C, Iop= 120 mA, TC= 70 °C, Vbias= - 1 V
I
1
1.6
t
V
t
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; 223-1 PRBS; NZR line code; DER≥10dB
[2] 7200 ps/nm dispersion, assuming fiber with an average dispersion of 18 ps/nm/km
Ab solute m a xim um ra tin g s
Pa ra m e te rs
Min
- 5
Ma x
70
Un it
°C
°C
mA
V
Operating case temperature
Storage temperature
-40
85
Laser forward current
Laser reverse voltage
150
2
Modulator forward voltage
Modulator reverse voltage
Photodiode forward current
Photodiode reverse voltage
TEC Voltage
1
V
5
V
1
mA
V
20
2.8
1.4
500
2000
10
V
TEC Current
A
ESD applied on modulator
ESD applied on laser [1]
Lead soldering time (at 260°C)
Packing Mounting Screw Torque
V
V
s
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.