1550 nm InGaAsP MQW-DFB
LASER DIODE MODULE CW LIGHT
SOURCE FOR DWDM APPLICATIONS
NX8562LB
FEATURES
DESCRIPTION
The NX8562LB is a 1550 nm Multiple Quatum Well (MQW)
Distributed Feed-Back (DFB) laser diode with Polarization
Maintain Fiber (PMF). This device is designed as a Continu-
ous Wave (CW) light source and is ideal for optical transmis-
sion 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 +65°C)
PART NUMBER
NX8562LB
TYP
SYMBOLS
PARAMETERS AND CONDITIONS
Laser Set Temperature
UNITS
°C
MIN
20
MAX
35
TSET
VF
Forward Voltage, Pf = 20 mW
Threshold Current
V
0.9
1.5
40
ITH
Pf
mA
20
Optical Output Power from Fiber,
IF = 167 mA, TLD = TSET
mW
µW
W/A
nm
20
Pth
η
Threshold Output Power from Fiber, IF = Ith
Quantum Efficiency
100
0.13
λp
Peak Emission Wavelength1, Pf = 20 mW, CW,
TLD = TSET
1527.6
ITU-T1
1565.6
2
∆v
SMSR
ηFM
RIN
fm
Spectral Line Width, Pf = 20 mW, CW, 3 dB down
Side Mode Suppression Ratio, Pf = 20 mW, CW
FM Response, Pf = 20 mW
MHz
dB
1
30
50
35
70
MHz/mA
dB/Hz
GHz
Relative Intensity Noise, Pf = 20 mW, 20 MHz to 3 GHz
Flat Frequency Response, Pf = 20 mW, +/-3 dB
Polarization Extinction Ratio2, Pf = 20 mW, CW
-150
1.8
15
ext
dB
20
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