NDL7912P Datasheet, PDF (1/5 Pages) NEC – 1550 nm OPTICAL FIBER COMM EA MODULATOR INTEGRATED MQW-DFB LASER DIODE MODULE FOR 2.5 Gb/s D-WDM ULTRALONG-REACH APPLICATIONS (600 km)

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 (TLD = 25°C, TC = -20 to +70°C, unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
NDL7912P
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
TSET
Laser Set Temperature
°C
20
IOP
Operating Current
mA
50
VRmc
Modulation Center Voltage
V
0.5
VRmpp
Modulation Voltage
V
2
VFLD
Forward Voltage of LD, IFLD = IOP
V
ITH
Threshold Current
mA
7
Pf
Optical Output Power from Fiber,
VRm = 0 V, IFLD = IOP
mW
0.5
λP
Peak Emission Wavelength, IFLD = IOP, VRm = 0 V,
nm
TLD = TSET
Specified to ITU-T¹
∆υ
Spectral Line Width, IFLD = IOP, -20 dB,
GHz
4
Under modulation²
SMSR
Side Mode Suppression Ratio, IFLD = IOP, VRm = 0 V
dB
30
ER
Extinction Ratio, IFLD = IOP, Under modulation²
dB
10
fC
Cut-off Frequency, IFLD = IOP, VRm = 1/2 VRmpp,
-3 dB, 50 Ω
GHz
3.2
tf
Rise Time, IFLD = IOP, 20-80%, Under modulation²
ps
tr
Rise Time, IFLD = IOP, 20-80%, Under modulation²
ps
Pe
Transmission Penalty Due to Dispersion, IFLD = IOP,
dB
Under modulation², 600 km standard fiber³
ISOL
Isolation
dB
30
Notes:
1. Please refer to Ordering Information.
2. 2.48832 Gb/s, PRBS 2^23-1, VRm = VRmc ± 1/2VRmpp, NEC Test System.
3. 600 km standard fiber NEC Test System, Transmission penalty at BER = 10^-9
MAX
35
100
1.5
3
1.8
20
125
125
2
California Eastern Laboratories