鈥?/div>
HERMETICALLY SEALED 14-PIN BUTTERFLY PACKAGE
鈥?POLARIZATION MAINTAIN FIBER PIGTAIL
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.
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擄C, T
C
= -20
PART NUMBER
SYMBOLS
T
SET
V
F
IF
I
TH
P
f
位
p
鈭唙
SMSR
R
IN
ext
PARAMETERS AND CONDITIONS
Laser Set Temperature
Forward Voltage, P
f
= 20 mW
Forward Current, Pf = 20 mW
Threshold Current
Optical Output Power from Fiber,
I
F
= 167 mA, T
LD
= T
SET
Peak Emission Wavelength
1
, P
f
= 20 mW, CW,
T
LD
= T
SET
Spectral Line Width, P
f
= 10 mW, CW, 3 dB down
Side Mode Suppression Ratio, P
f
= 20 mW, CW
Relative Intensity Noise, P
f
= 20 mW, 20 MHz to 3 GHz
Polarization Extinction
Ratio
2
,
P
f
= 20 mW, CW
UNITS
擄C
V
mA
mA
mW
nm
MHz
dB
dB/Hz
dB
to +70擄C)
NX8562 Series
MIN
20
1.2
120
20
20
1527.99
ITU-T
1
1
33
20
45
-150
1611.78
2
TYP
MAX
35
1.5
167
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