NEC's CW InGaAsP MQW DFB
LASER DIODE MODULE
FOR DWDM APPLICATIONS
(20 mW MIN)
NX8562
SERIES
FEATURES
DESCRIPTION
NEC's NX8562 Series are a 1550 nm Multiple Quatum Well
(MQW) Distributed Feed-Back (DFB) laser diode with Polar-
ization Maintain Fiber (PMF). This device is designed as a
Continuous Wave (CW) light source and is ideal for optical
transmission systems in which external modulators are used.
• AVAILABLE FOR DWDM WAVELENGTHS BASED ON
ITU-T RECOMMENDATIONS
(100 GHz grid) refer to the Ordering Information
• OUTPUT POWER:
Pf = 20 mW MIN
• INTERNAL THERMOELECTRIC COOLER AND ISOLATOR
• HERMETICALLY SEALED 14-PIN BUTTERFLY PACKAGE
• POLARIZATION MAINTAIN FIBER PIGTAIL
The device is available for Dense Wavelength Division Multi-
plexing (DWDM) wavelengths based on ITU-T recommenda-
tions, enabling a wide range of applications.
ELECTRO-OPTICAL CHARACTERISTICS (TLD = 25°C, TC = -20 to +70°C)
PART NUMBER
NX8562 Series
TYP
SYMBOLS
PARAMETERS AND CONDITIONS
Laser Set Temperature
UNITS
°C
MIN
MAX
35
TSET
VF
20
Forward Voltage, Pf = 20 mW
Forward Current, Pf = 20 mW
Threshold Current
V
1.2
120
20
1.5
167
40
IF
mA
mA
ITH
Pf
Optical Output Power from Fiber,
IF = 167 mA, TLD = TSET
mW
nm
20
λp
Peak Emission Wavelength1, Pf = 20 mW, CW,
TLD = TSET
1527.99
ITU-T1
1611.78
2
∆v
SMSR
RIN
Spectral Line Width, Pf = 10 mW, CW, 3 dB down
Side Mode Suppression Ratio, Pf = 20 mW, CW
Relative Intensity Noise, Pf = 20 mW, 20 MHz to 3 GHz
Polarization Extinction Ratio2, Pf = 20 mW, CW
MHz
dB
1
33
20
45
dB/Hz
dB
-150
ext
Notes:
1. Available for DWDM based on ITU-T recommendations. please refer to Ordering Information.
2. Polarization state of LD is aligned parallel to the slow axis.
California Eastern Laboratories