NEC'S EA MODULATOR AND
WAVELENGTH MONITOR INTEGRATED
InGaAsP MQW DFB LASER DIODE
MODULE FOR 2.5 Gb/s ULTRALONG-REACH 240,
360, 600 km DWDM APPLICATIONS
FEATURES
•
INTEGRATED ELECTROABSORPTION MODULATOR
•
WAVELENGTH MONITOR FUNCTION
(Etalon
Þ
lter, Wavelength monitor PD)
•
VERY LOW DISPERSION PENALTY
NX8567SAS Series - over 240 km (4320 ps/nm)
NX8567SAM Series - over 360 km (6480 ps/nm)
NX8567SA Series - over 600 km (10800 ps/nm)
•
LOW MODULATION VOLTAGE
•
AVAILABLE FOR DWDM WAVELENGHT BASED ON
ITU-T RECOMMENDATION (50 GHz grid, refer to
ordering information)
NX8567SA
Series
DESCRIPTION
NEC's NX8567SA Series is an Electro-Absorption (EA) modu-
lator and wavelength monitor integrated, 1 550 nm Multiple
Quantum Well (MQW) structured Distributed Feed-Back (DFB)
laser diode module. The module is capable of 2.5 Gb/s ap-
plications of over 240 km, 360 km, 600 km ultralong-reach and
available for Dense Wavelength Division Multiplexing (DWDM)
wavelengths based on ITU-T recommendations, enabling a
wide range of applications
ELECTRO-OPTICAL CHARACTERISTICS
(T
LD
= Tset, T
C
= -5 to +70°C, unless otherwise speciÞed)
PART NUMBER
SYMBOLS
T
SET
I
OP
V
center
V
mod
V
FLD
I
TH
PARAMETERS AND CONDITIONS
Laser Set Temperature
1
Operating Current
Modulation Center Voltage
2
Modulation Voltage
2
Forward Voltage of LD, I
FLD
= I
OP
Threshold Current
I
FLD
= I
OP,
Under modulation
2
P
f
Optical Output Power from Fiber,
(NX8567SAM/SA Series)
I
FLD
= I
OP,
Under modulation
2
(NX8567SAS Series)
λ
P
SMSR
ER
t
f
t
r
Peak Emission Wavelength, I
FLD
= I
OP
, V
EA
= 0 V
Side Mode Suppression Ratio, I
FLD
= I
OP
, V
EA
= 0 V
Extinction Ratio, I
FLD
= I
OP
, Under modulation
2
Rise Time, I
FLD
= I
OP
, 20-80%, Under modulation
2
Rise Time, I
FLD
= I
OP
, 80-20%, Under modulation
2
nm
dB
dB
ps
ps
dBm
0
1528
30
10
–
–
+1
ITU-T
3
40
11
–
–
–
1564
–
–
125
125
UNITS
°C
mA
V
V
V
mA
MIN
20
50
-2.0
–
–
–
-5
60
–
2
–
7
-2
NX8567SA SERIES
TYP
MAX
35
80
-0.5
3
2.0
20
–
Notes:
1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength
2. 2.48832 Gb/s, PRBS 223 -1, V
EA
= V
center
±
1/2 Vmod, I
FLD
= I
op
, TLD = Tset, NEC Test System
V
center
: a certain point between -2.0 and -0.5 V
V
mod
: a certain point 3 V or below
I
op
: a certain point between 50 and 80 mA
3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION.
4. BER = 10
-10,
NX8567SAS: 240 km (4320 ps/nm)
BER = 10
-10,
NX8567SAM: 360 km (6480 ps/nm)
BER = 10
-10,
NX8567SA: 600 km (10800 ps/nm)
California Eastern Laboratories
NX8567SA SERIES
ELECTRO-OPTICAL CHARACTERISTICS
(T
LD
= Tset, T
C
= -5 to +70°C, Unless otherwise speciÞed)
PART NUMBER
SYMBOLS
DP
PARAMETERS AND CONDITIONS
Dispension Penalty, I
FLD
= I
op
, SMF Under modulation
2,4
UNITS
dB
MIN
–
NX8567SA SERIES
TYP
–
MAX
2
I
S
S
11
Isolation
Input Return Loss
I
FLD
= I
op
, V
EA
= -1 V, 50
Ω
130 MHz to 2 GHz
I
FLD
= I
op
, V
EA
= -1 V, 50
Ω
2 GHz to 2.5 GHz
dB
23
–
–
–
–
–
-8
-5
dB
–
Notes:
1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength
2. 2.48832 Gb/s, PRBS 223 -1, V
EA
= V
center
±
1/2 Vmod, I
FLD
= I
op
, TLD = Tset, NEC Test System
V
center
: a certain point between -2.0 and -0.5 V
V
mod
: a certain point 3 V or below
I
op
: a certain point between 50 and 80 mA
3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION.
4. BER = 10
-10,
NX8567SAS: 240 km(4320 ps/nm)
BER = 10
-10,
NX8567SAM: 360 km (6480 ps/nm)
BER = 10
-10,
NX8567SA: 600 km (10800 ps/nm)
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD, T
LD
= Tset, T
C
= -5 to +70°C, BOL)
SYMBOLS
I
m
(Pf)
I
m
(λp)
I
m
(λ)
|λ
1
-λ
2
|
ηλ
I
D
C
t
γ
2
Discrimination Slope
1
, V
RPD
= 5 V, I
FLD
= I
op
, Locking point
Dark Current, V
RPD
= 5 V, V
EA
= 0 V
Terminal Capacitance, V
RPD
= 5 V, f = 1 MHz
Tracking Error, I
m
(Pf) = const.
Note:
1. Operating region, Discrimination slope, Slope assignment
I
m
(λ)
I
m
@100%
I
1
: I
m
@75%
I
m
(λ
p
)
I
2
: I
m
@25%
I
m
@0%
0
λ
1
λ
p
λ
2
Negative Slope
λ
(nm)
Operation region
Locking point
I
m
(λ
p
)
I
1
: I
m
@25%
I
m
@0%
0
λ
1
λ
p
λ
2
Positive Slope
λ
(nm)
PARAMETERS AND CONDITIONS
Monitor Current (P
f
Monitor), V
RPD
= 5 V, I
FLD
= I
op
Monitor Current (λp Monitor), V
RPD
= 5 V, I
FLD
= I
op
, Locking point
Operation Region
UNITS
µA
µA
%
pm
µA/pm
nA
pF
dB
MIN
10
5
25
90
0.24
–
–
–
TYP
–
–
–
–
–
–
–
–
MAX
200
100
75
–
–
10
15
0.5
η
λ
=
I
1
– I
2
λ
1
–
λ
2
[
µ
A/pm]
I
m
(λ)
I
m
@100%
I
2
: I
m
@75%
Operation region
Locking point
2. Tracking error:
γ
P
f
(mW)
T
LD
= T
set
, T
C
= 25ûC
P
op
P
f
T
LD
= T
set
, T
C
= –20 to +70ûC
γ
= 10 log
P
f
P
op
[dB]
0
I
m
I
m
NX8567SA SERIES
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC, T
C
= -5 to +70°C)
PART NUMBER
SYMBOLS
R
B
I
C
V
C
PARAMETERS AND CONDITIONS
Thermistor Resistance, T
LD
= 25°C
B Constant
Cooler Current, T
LD
= T
set
Cooler Voltage, T
LD
= T
set
kΩ
K
A
V
UNITS
9.5
3350
MIN
NX8567SA SERIES
TYP
10.0
3450
MAX
10.5
3550
1.2
2.4
ABSOLUTE MAXIMUM RATINGS
1
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. (3 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
-5 to +70
-40 to +85
350
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NX8567SA SERIES
ORDERING INFORMATION
NX8567SA
-
CC : SC-UPC connector (standard)
BC : FC-UPC connector (option)
Wavelength code : Refer to
Table A
Without : 600 km (10800 ps/nm)
M
: 360 km (6480 ps/nm)
S
: 240 km (4320 ps/nm)
TABLE A: DWDM wavelengths based on ITU-T recommendations (@ TLD = Tset)
Wavelength Code
287
291
295
299
303
307
311
315
318
322
326
330
334
338
342
346
350
354
358
362
366
370
373
377
381
385
389
393
397
401
405
409
413
417
421
425
429
433
437
441
445
449
453
ITU-T Wavelength
*1
(nm)
1528.773
1529.163
1529.553
1529.553
1530.334
1530.725
1531.116
1531.507
1531.898
1532.290
1532.681
1533.073
1533.465
1533.073
1534.250
1534.643
1535.036
1535.429
1535.822
1536.216
1536.643
1537.003
1537.397
1537.792
1538.186
1538.581
1538.976
1539.371
1539.766
1540.162
1540.557
1540.953
1541.349
1541.746
1542.142
1542.539
1542.936
1543.333
1543.730
1544.128
1544.526
1544.924
1545.322
Frequency
(THz)
196.10
196.05
196.00
195.95
195.90
195.85
195.80
195.75
195.70
195.65
195.60
195.55
195.50
195.45
195.40
195.35
195.30
195.25
195.20
195.15
195.10
195.05
195.00
194.95
194.90
194.85
194.80
194.75
194.70
194.65
194.60
194.55
194.50
194.45
194.40
194.35
194.30
194.25
194.20
194.15
194.10
194.05
194.00
Wavelength Code
457
461
465
469
473
477
485
489
493
497
501
505
509
513
517
521
525
529
533
537
541
545
549
553
557
561
565
569
573
577
581
585
589
593
597
602
606
610
614
618
622
626
630
ITU-T Wavelength
*1
(nm)
1545.720
1546.119
1546.518
1546.917
1547.316
1547.715
1548.515
1548.915
1549.315
1549.715
1550.116
1550.517
1550.918
1551.319
1551.721
1552.122
1552.524
1552.926
1553.329
1553.731
1554.134
1554.537
1554.940
1555.343
1555.747
1556.151
1556.555
1556.959
1557.363
1557.768
1558.173
1558.578
1558.983
1559.389
1559.794
1560.200
1560.606
1561.013
1561.419
1561.826
1562.233
1562.640
1563.047
Frequency
(THz)
193.95
193.90
193.85
193.80
193.70
193.70
193.60
193.55
193.50
193.45
193.40
193.35
193.30
193.25
193.20
193.15
193.10
193.05
193.00
192.95
192.90
192.85
192.80
192.75
192.70
192.65
192.60
192.55
192.50
192.45
192.40
192.30
192.30
192.25
192.20
192.15
192.10
192.05
192.00
191.95
191.90
191.85
191.80
Note:
1.
λ
monitor slope: Channel frequency for 191.80 THz + 2n × 0.05 THz is assigned on negative slope.
Channel frequency for 191.80 THz + (2n + 1) × 0.05 THz is assigned on positive slope.
n is a positive integer including zero.
NX8567SA SERIES
OUTLINE DIMENSIONS
(Units in mm)
15.24
2.54
6.0 MAX.
10 MIN.
4 –
φ
2.67
22 MAX.
0.9
7
1
8.0
5.4
TOP VIEW
#7
–
+
Cooler
PD (λ
p
)
PD (P
f
)
LD
MOD
1.25
#1
Thermistor
8.89±0.13
8
14
12.7±0.15
Fiber
Nose
#8
#14
20.83±0.13
26.04±0.13
Pin
No.
PIN CONNECTIONS
Function
Thermistor
Thermistor
LD DC Bias (+)
PD (P
f
) Anode (–)
PD (λ
p
) and
PD (P
f
) Cathode (+)
Cooler (+)
Cooler (–)
Pin
No.
8
9
10
11
12
13
14
Function
GND
GND
PD (λ
p
) Anode (–)
LD/MOD GND
Signal Input (MOD),
50
Ω
RF Input
LD/MOD GND
GND
Optical Fiber (SMF)
Length : 900 MIN.
0.75
8.0
1
2
3
4
5
6
7
29.97±0.25
OPTICAL FIBER CHARACTERISTICS
PARAMETER
Mode Field Diameter
Cladding Diameter
Tight Buffer Diameter
Cut-off Wavelenght
Attenuation 1525 to 1575 nm
Minimum Fiber Bending Radius
Fiber Length
Flammability
UNITS
µm
µm
µm
nm
dB/km
mm
mm
SPECIFICATION
9.3±0.5
125±1
900±100
< 1270
< 0.3
30
1225 MIN
UL1581VW-1
35±2 mm
8.99±0.5 mm
-CC : SC-UPC connector
-BC : FC-UPC connector
Fiber Length: 900 mm MIN.
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected
to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
CEL for all damages resulting from such improper use or sale.
07/29/2003
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