鈥?/div>
HERMETICALLY SEALED 14-PIN BUTTERFLY PACKAGE
鈥?POLARIZATION MAINTAIN FIBER PIGTAIL
NX8562LB
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.
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
(T
LD
= 25掳C, T
C
= -20
PART NUMBER
SYMBOLS
T
SET
V
F
I
TH
P
f
Pth
畏
位
p
鈭唙
SMSR
畏
FM
RIN
f
m
ext
PARAMETERS AND CONDITIONS
Laser Set Temperature
Forward Voltage, P
f
= 20 mW
Threshold Current
Optical Output Power from Fiber,
I
F
= 167 mA, T
LD
= T
SET
Threshold Output Power from Fiber, I
F
= Ith
Quantum Efficiency
Peak Emission Wavelength
1
, P
f
= 20 mW, CW,
T
LD
= T
SET
Spectral Line Width, P
f
= 20 mW, CW, 3 dB down
Side Mode Suppression Ratio, P
f
= 20 mW, CW
FM Response, P
f
= 20 mW
Relative Intensity Noise, P
f
= 20 mW, 20 MHz to 3 GHz
Flat Frequency Response, P
f
= 20 mW, +/-3 dB
Polarization Extinction Ratio
2
, P
f
= 20 mW, CW
UNITS
掳C
V
mA
mW
碌W
W/A
nm
MHz
dB
MHz/mA
dB/Hz
GHz
dB
to +65掳C)
NX8562LB
MIN
20
0.9
20
20
100
0.13
1527.6
ITU-T
1
1
30
50
1.8
15
20
35
70
-150
1565.6
2
TYP
MAX
35
1.5
40
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
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