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
NX8567SA
Series
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
DESCRIPTION
• 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)
FEATURES
California Eastern Laboratories
PART NUMBER NX8567SA SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
TSET Laser Set Temperature1°C 20 35
IOP Operating Current mA 50 60 80
Vcenter Modulation Center Voltage2V -2.0 – -0.5
Vmod Modulation Voltage2V–23
VFLD For ward Voltage of LD, IFLD = IOP V––2.0
ITH Thresh old Current mA – 7 20
PfOptical Output Power from Fiber,
IFLD = IOP, Under modulation2
(NX8567SAM/SA Series) dBm
-5 -2 –
IFLD = IOP, Under modulation2
(NX8567SAS Series) 0+1–
λPPeak Emission Wavelength, IFLD = IOP, VEA = 0 V nm 1528 ITU-T31564
SMSR Side Mode Suppression Ratio, IFLD = IOP, VEA = 0 V dB 30 40 –
ER Extinction Ratio, IFLD = IOP, Under modulation2dB 10 11 –
tfRise Time, IFLD = IOP, 20-80%, Under modulation2ps – – 125
trRise Time, IFLD = IOP, 80-20%, Under modulation2ps – – 125
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tse t, TC = -5 to +70°C, unless otherwise speciÞ ed)
Notes:
1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength
2. 2.48832 Gb/s, PRBS 223 -1, VEA = Vcenter ±1/2 Vmod, IFLD = Iop, TLD = Tset, NEC Test System
Vcenter : a certain point between -2.0 and -0.5 V
Vmod : a certain point 3 V or below
Iop : 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)
NX8567SA SERIES
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tse t, TC = -5 to +70°C, Unless otherwise speciÞ ed)
PART NUMBER NX8567SA SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
DP Dispension Penalty, IFLD = Iop, SMF Under modulation2,4 dB – – 2
ISIsolation dB 23 – –
S11 Input Return Loss IFLD = Iop, VEA = -1 V, 50 Ω
130 MHz to 2 GHz dB
––-8
IFLD = Iop, VEA = -1 V, 50 Ω
2 GHz to 2.5 GHz
––-5
Notes:
1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength
2. 2.48832 Gb/s, PRBS 223 -1, VEA = Vcenter ±1/2 Vmod, IFLD = Iop, TLD = Tset, NEC Test System
Vcenter : a certain point between -2.0 and -0.5 V
Vmod : a certain point 3 V or below
Iop : 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, TLD = Ts e t, TC = -5 to +70°C, BOL)
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
Im (Pf) Monitor Current (Pf Monitor), VRPD = 5 V, IFLD = Iop µA10–200
Im (λp) Monitor Current (λp Monitor), VRPD = 5 V, IFLD = Iop, Locking point µA5–100
Im (λ) Operation Region % 25 – 75
|λ1-λ2| pm 90 – –
ηλ Discrimination Slope1, VRPD = 5 V, IFLD = Iop, Locking point µA/pm 0.24 – –
IDDark Current, VRPD = 5 V, VEA = 0 V nA – – 10
CtTerminal Capacitance, VRPD = 5 V, f = 1 MHz pF – – 15
γ2Tracking Error, Im(Pf) = const. dB – – 0.5
Note:
1. Operating region, Discrimination slope, Slope assignment
0
Im (λ)
Im @100%
Im (λp)
Im @0%
I
1: Im @75%
I
2: Im @25%
λ1λ2
λp
λ (nm)
Locking point
Ne
g
ative Slo
p
e
Operation region
0
Im (λ)
Im @100%
Im (λp)
Im @0%
I2: Im @75%
I1: Im @25%
λ1λ2
λp
λ (nm)
Locking point
Positive Slo
p
e
Operation region
λ1 – λ2
I1 – I2
λ = [ A/pm]
η
µ
Pf
(mW)
0Im
Im
TLD = Tset, TC = 25ûC
TLD = Tset, TC = –20 to +70ûC
Pop
Pfγ = 10 log [dB]
Pf
Pop
2. Tracking error: γ
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
ABSOLUTE MAXIMUM RATINGS1
SYMBOLS PARAMETERS UNITS RATINGS
PfOptical Output Power from Fiber mW 10
IFLD Forward Current of LD mA 150
VRLD Reverse Voltage of LD V 2.0
VFm Forward Voltage of Modulator V 1
VRm Reverse Voltage of Modulator V 5
IFPD Forward Current of PD mA 1
VRPD Reverse Voltage of PD V 10
ICCooler Current A 1.5
VCCooler Voltage V 2.5
TCOperating Case Temperature °C -5 to +70
TSTG Storage Temperature °C -40 to +85
TSLD Lead Soldering Temp. (3 s) °C 350
NX8567SA SERIES
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Thermistor and TEC, TC = -5 to +70°C)
PART NUMBER NX8567SA SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
R Thermistor Resistance, TLD = 25°C kΩ9.5 10.0 10.5
BB Constant K 3350 3450 3550
ICCooler Current, TLD = Tset A 1.2
VCCooler Voltage, TLD = Tset V 2.4
ORDERING INFORMATION
NX8567SA SERIES
Wavelength Code ITU-T Wavelength *1
(nm)
Frequency
(THz) Wavelength Code ITU-T Wavelength *1
(nm)
Frequency
(THz)
287 1528.773 196.10 457 1545.720 193.95
291 1529.163 196.05 461 1546.119 193.90
295 1529.553 196.00 465 1546.518 193.85
299 1529.553 195.95 469 1546.917 193.80
303 1530.334 195.90 473 1547.316 193.70
307 1530.725 195.85 477 1547.715 193.70
311 1531.116 195.80 485 1548.515 193.60
315 1531.507 195.75 489 1548.915 193.55
318 1531.898 195.70 493 1549.315 193.50
322 1532.290 195.65 497 1549.715 193.45
326 1532.681 195.60 501 1550.116 193.40
330 1533.073 195.55 505 1550.517 193.35
334 1533.465 195.50 509 1550.918 193.30
338 1533.073 195.45 513 1551.319 193.25
342 1534.250 195.40 517 1551.721 193.20
346 1534.643 195.35 521 1552.122 193.15
350 1535.036 195.30 525 1552.524 193.10
354 1535.429 195.25 529 1552.926 193.05
358 1535.822 195.20 533 1553.329 193.00
362 1536.216 195.15 537 1553.731 192.95
366 1536.643 195.10 541 1554.134 192.90
370 1537.003 195.05 545 1554.537 192.85
373 1537.397 195.00 549 1554.940 192.80
377 1537.792 194.95 553 1555.343 192.75
381 1538.186 194.90 557 1555.747 192.70
385 1538.581 194.85 561 1556.151 192.65
389 1538.976 194.80 565 1556.555 192.60
393 1539.371 194.75 569 1556.959 192.55
397 1539.766 194.70 573 1557.363 192.50
401 1540.162 194.65 577 1557.768 192.45
405 1540.557 194.60 581 1558.173 192.40
409 1540.953 194.55 585 1558.578 192.30
413 1541.349 194.50 589 1558.983 192.30
417 1541.746 194.45 593 1559.389 192.25
421 1542.142 194.40 597 1559.794 192.20
425 1542.539 194.35 602 1560.200 192.15
429 1542.936 194.30 606 1560.606 192.10
433 1543.333 194.25 610 1561.013 192.05
437 1543.730 194.20 614 1561.419 192.00
441 1544.128 194.15 618 1561.826 191.95
445 1544.526 194.10 622 1562.233 191.90
449 1544.924 194.05 626 1562.640 191.85
453 1545.322 194.00 630 1563.047 191.80
TABLE A: DWDM wavelengths based on ITU-T recommendations (@ TLD = Tset)
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 -
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)
OUTLINE DIMENSIONS (Units in mm)
OPTICAL FIBER CHARACTERISTICS
PARAMETER UNITS SPECIFICATION
Mode Field Diameter µm 9.3±0.5
Cladding Diameter µm 125±1
Tight Buffer Diameter µm 900±100
Cut-off Wavelenght nm < 1270
Attenuation 1525 to 1575 nm dB/km < 0.3
Minimum Fiber Bending Radius mm 30
Fiber Length mm 1225 MIN
Flammability UL1581VW-1
07/29/2003
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.
NX8567SA SERIES
5.4
8.0
20.83±0.13
26.04±0.13
7
8
1
14
1.25
15.24
2.54
4 – 2.67
φ
22 MAX.
12.7±0.15
10 MIN.
8.89±0.13
Nose
Fiber
Pin
No.
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function
PIN CONNECTIONS
GND
GND
PD (λp) Anode (–)
LD/MOD GND
Signal Input (MOD),
50 Ω RF Input
LD/MOD GND
GND
Thermistor
Thermistor
LD DC Bias (+)
PD (Pf) Anode (–)
PD (λp) and
PD (Pf) Cathode (+)
Cooler (+)
Cooler (–)
29.97±0.25
8.0
0.75
Optical Fiber (SMF)
Length : 900 MIN.
0.9
6.0 MAX.
TOP VIEW
#7 #1
#8 #14
PD (Pf)Thermistor
PD (λp)
+–
LD
MOD
Cooler
Function
Fiber Length: 900 mm MIN.
35±2 mm
8.99±0.5 mm
-CC : SC-UPC connector
-BC : FC-UPC connector
