1550 nm OPTICAL FIBER COMM.
EA MODULATOR INTEGRATED MQW-DFB
LASER DIODE MODULE FOR 2.5 Gb/s D-WDM NDL7912P
ULTRALONG-REACH APPLICATIONS (600 km) SERIES
FEATURES
•
INTEGRATED ELECTROABSORPTION MODULATOR
•
VERY LOW DISPERSION PENALTY OVER 600 km
•
LOW MODULATION VOLTAGE
•
WAVELENGTH SELECTABLE FOR ITU-T STANDARDS
•
14-PIN BUTTERFLY PACKAGE
DESCRIPTION
The NDL7912P is an EA modulator integrated 1550 nm DFB-
LD module for 2.5 Gb/s. The newly developed bandgap energy
controlled selective MOVPE technology is utilized as the
fabrication method. It is designed for 2.5 Gb/s D-WDM ultralong-
reach applications.
ELECTRO-OPTICAL CHARACTERISTICS
(T
LD
= 25°C, T
C
= -20 to +70°C, unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
T
SET
I
OP
V
Rmc
V
Rmpp
V
FLD
I
TH
P
f
λ
P
∆υ
SMSR
ER
f
C
t
f
t
r
P
e
ISOL
PARAMETERS AND CONDITIONS
Laser Set Temperature
Operating Current
Modulation Center Voltage
Modulation Voltage
Forward Voltage of LD, I
FLD
= I
OP
Threshold Current
Optical Output Power from Fiber,
V
Rm
= 0 V, I
FLD
= I
OP
Peak Emission Wavelength, I
FLD
= I
OP
, V
Rm
= 0 V,
T
LD
= T
SET
Spectral Line Width, I
FLD
= I
OP
, -20 dB,
Under modulation
2
Side Mode Suppression Ratio, I
FLD
= I
OP
, V
Rm
= 0 V
Extinction Ratio, I
FLD
= I
OP
, Under modulation
2
Cut-off Frequency, I
FLD
= I
OP
, V
Rm
= 1/2 V
Rmpp,
-3 dB, 50
Ω
Rise Time, I
FLD
= I
OP
, 20-80%, Under modulation
2
Rise Time, I
FLD
= I
OP
, 20-80%, Under modulation
2
Transmission Penalty Due to Dispersion, I
FLD
= I
OP
,
Under modulation
2
, 600 km standard fiber
3
Isolation
UNITS
°C
mA
V
V
V
mA
mW
nm
GHz
dB
dB
GHz
ps
ps
dB
dB
30
30
10
3.2
125
125
2
0.5
Specified to ITU-T
1
4
7
MIN
20
50
0.5
2
NDL7912P
TYP
MAX
35
100
1.5
3
1.8
20
Notes:
1. Please refer to Ordering Information.
2. 2.48832 Gb/s, PRBS 2
23-1
, V
Rm
= V
Rmc
±
1/2V
Rmpp
, NEC Test System.
3. 600 km standard fiber NEC Test System, Transmission penalty at B
ER
= 10
-9
California Eastern Laboratories
NDL7912P
ELECTRO-OPTICAL CHARACTERISTICS
(T
LD
= 25°C, T
C
= -20 to +70°C, unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
I
m
I
D
γ
1
C
t
R
B
I
C
V
C
Note:
1.
γ
= 10 log
PARAMETERS AND CONDITIONS
Monitor Current, I
FLD
= I
OP
, V
Rm
= 0 V
Dark Current, V
RPD
= 5 V
Tracking Error, I
m
= const.
Monitor Capacitance, V
RPD
= 5 V, f = 1 MHz
Thermistor Resistance
B Constant
Cooler Current,
∆T
= 70 — T
set
Cooler Voltage,
∆T
= 70 — T
set
P
f
P
OP
UNITS
µA
nA
dB
pF
kΩ
K
A
V
9.5
3300
10.0
3400
MIN
20
Applicable to Monitor PD
1000
10
0.5
15
10.5
3500
1.5
2.5
NDL7912P
TYP
MAX
Applicable to Thermistor and TEC
P
f
(mW)
T
LD
= T
C
= 25°C
P
op
P
f
T
LD
= 25°C, T
C
= -20 to +70°C
0
I
m
(at P
f
(25°C) = P
op
)
I
m
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25°C, unless otherwise specified)
SYMBOLS
P
f
I
FLD
V
RLD
V
Fm
V
Rm
I
FPD
V
RPD
I
C
V
C
T
C
T
STG
T
SLD
PARAMETERS
Optical Output Power from Fiber
Forward Current of LD
Reverse Voltage of LD
Forward Voltage of Modulator
Reverse Voltage of Modulator
Forward Current of PD
Reverse Voltage of PD
Cooler Current
Cooler Voltage
Operating Case Temperature
Storage Temperature
Lead Soldering Temp. (10 s)
UNITS
mW
mA
V
V
V
mA
V
A
V
°C
°C
°C
RATINGS
10
150
2.0
1
5
1
10
1.5
2.5
-20 to +70
-40 to +85
260
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NDL7912P
ORDERING INFORMATION
PART NUMBER
With SC-PC Connector
NDL7912PD477
NDL7912PD485
NDL7912PD493
NDL7912PD501
NDL7912PD509
NDL7912PD517
NDL7912PD525
NDL7912PD533
NDL7912PD541
NDL7912PD549
NDL7912PD557
NDL7912PD565
NDL7912PD573
NDL7912PD581
NDL7912PD589
NDL7912PD597
NDL7912PD606
PART NUMBER
With FC-PC Connector
NDL7912PC477
NDL7912PC485
NDL7912PC493
NDL7912PC501
NDL7912PC509
NDL7912PC517
NDL7912PC525
NDL7912PC533
NDL7912PC541
NDL7912PC549
NDL7912PC557
NDL7912PC565
NDL7912PC573
NDL7912PC581
NDL7912PC589
NDL7912PC597
NDL7912PC606
ITU-T Wavelength
(nm)
1547.72
1548.51
1549.32
1550.12
1550.92
1551.72
1552.52
1553.33
1554.13
1554.94
1555.75
1556.55
1557.36
1558.17
1558.98
1559.79
1560.61
Frequency
(THz)
193.7
193.6
193.5
193.4
193.3
193.2
193.1
193.0
192.9
192.8
192.7
192.6
192.5
192.4
192.3
192.2
192.1
TYPICAL PERFORMANCE CURVES
(T
LD
= +25°C, unless otherwise specified)
OPTICAL OUTPUT POWER FROM FIBER vs.
FORWARD CURRENT OF LD (CW)
EXTINCTION RATIO vs.
MODULATION VOLTAGE (CW)
0
V
Rm
= 0 V
OPtical Output Power from Fiber, P
f
(mW)
2.0
1.5
0.5 V
1.0
Extinction Ratio, ER (dB)
5
10
15
0.5
1V
2V
3V
20
0
0
50
100
150
200
25
0
1
2
3
Forward Current of LD, I
FLD
(mA)
Modulation Voltage, V
Rmpp
(V)
NDL7912P
TYPICAL PERFORMANCE CURVES
(T
LD
= +25°C)
EXTINCTION RATIO vs.
MODULATION VOLTAGE (CW)
FREQUENCY RESPONSE (S21)
0
Return Loss, R
L
(10dB/div.)
0.05
2.55
5.05
Response (3 dB/div.)
0
0.05
2.55
5.05
Frequency, f (GHz)
Frequency, f (GHz)
SPECTRAL LINE WIDTH
2.5 Gb/s
PRBS 2
23-1
Relative Intensity (5 dB/div.)
Wavelength (1 GHz/div.)
ERROR RATE CHARACTERISTICS
ERROR RATE CHARACTERISTICS
10
-3
V
Rmpp
= 2.2 V,
V
Rmc
= 0.8 V
Extinction Ratio, ER (dB)
10
-4
10
-5
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
10
-12
-42
back to back
after 360 km
after 600 km
-40
-38
-36
-34
-32
Average Received Power, P (dBm)
NDL7912P
600 km STANDARD FIBER TRANSMISSION EXAMPLE
120 km
P
IN
(EDFA) : -20 to -21 dBm
P
OUT
(EDFA) : +8 dBm
120 km
2.5 Gb/s
TX
EDFA
EDFA
EDFA
120 km
∆λ
= 0.6 nm
RX
120 km
EDFA
120 km
EDFA
OUTLINE DIMENSIONS
(Units in mm)
NDL7912P
15.24
2.54
10 MIN.
4 -
φ2.67
1.25
Top View
7
0.9
22.3
12.7
±
0.15
1
8.89
±
0.13
7
1
8
14
6.0
-
+
Cooler
PD
Thermistor
LD
MOD
0.5
20.83
±
0.13
26.04
±
0.13
8
14
8.2
±
0.2
0.75
Optical Fiber (SMF)
Length : 1 m
5.15
29.97
±
0.25
Pin No.
1.
2.
3.
4.
5.
6.
7.
PIN CONNECTIONS
Function
Pin No. Function
Thermistor
8.
GND
Thermistor
9.
GND
LD DC Bias
10.
NC
PD Anode
11.
GND
PD Cathode
12.
Signal Input (MOD)
Cooler Anode
50
Ω
RF Input
Cooler Cathode
13.
GND
14.
GND
5.6
EXCLUSIVE NORTH AMERICAN AGENT FOR
1.0
RF, MICROWAVE & OPTOELECTRONIC SEMICONDUCTORS
CALIFORNIA EASTERN LABORATORIES
•
Headquarters
•
4590 Patrick Henry Drive
•
Santa Clara, CA 95054-1817
•
(408) 988-3500
•
Telex 34-6393
•
FAX (408) 988-0279
24-Hour Fax-On-Demand: 800-390-3232 (U.S. and Canada only)
•
Internet: http://WWW.CEL.COM
11/14/2000
DATA SUBJECT TO CHANGE WITHOUT NOTICE
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