NDL7620P_00 Datasheet, PDF (1/4 Pages) NEC – 1310 nm OPTICAL FIBER COMMUNICATIONS InGaAsP STRAINED MQW-DFB LASER DIODE COAXIAL MODULE FOR 2.5 Gb/s

1310 nm OPTICAL FIBER
COMMUNICATIONS InGaAsP
STRAINED MQW-DFB LASER DIODE
COAXIAL MODULE FOR 2.5 Gb/s
NDL7620P
SERIES
FEATURES
• PEAK EMISSION WAVELENGTH:
λP = 1310 nm
• HIGH SPEED RESPONSE:
tr = 40 ps
tf = 100 ps
• INTERNAL OPTICAL ISOLATOR
• InGaAs MONITOR PIN-PD
• WIDE OPERATING TEMPERATURE RANGE:
TC = 0 to +70°C
• λ/4 - PHASE-SHIFTED DFB
DESCRIPTION
The NDL7620P Series is a 1310 nm λ/4-phase-shifted DFB
(Distributed Feed-Back) laser diode coaxial module with inter-
nal optical isolator. Newly developed strained Multiple
Quantum Well (st-MQW) structure is adopted to achieve
stable dynamic single longitudinal mode operation over a wide
temperature range of 0 to +70°C. It is designed for STM-16
applications.
ELECTRO-OPTICAL CHARACTERISTICS (TC = 0 to +70 °C, unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
NDL7620P Series
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
VF
Forward Voltage, Pf = 2 mW, TC = 25°C
V
0.9
Pf
Optical Output Power from Fiber, IF = ITH + 40 mA
mW
2.0
ITH
Threshold Current
mA
ηd
Differential Efficiency from Fiber, Pf = 2 mW
W/A
0.05
∆ηd
Temperature Dependence of Differential Efficiency
dB
-3.5
-2.5
from Fiber, ∆ηd = 10 log ^{ηd (TC = 70° C)}
ηd (TC = 25° C)
λp
Peak Emission Wavelength, Pf = 1 mW, Ib = ITH,
nm
2.5 G/s-NRZ, PN 1/2
SMSR
Side Mode Suppression Ratio, Pf = 1 mW, Ib = ITH,
dB
2.5 G/s-NRZ, PN 1/2
tr
Rise Time, 10-90%, Ib = 0.9 x Ith
ps
tf
Fall Time, 90-10%, Ib = 0.9 X Ith
ps
Im
Monitor Current, VR = 5 V, Pf = 2 mW
µA
ID
Monitor Dark Current, VR = 5 V, TC = 25°C
nA
Ct
Monitor PD Terminal Capacitance, VR = 5 V
pF
γ¹
Tracking Error, Im = const.
dB
Note:
Pf
Pf
1. γ = 10 log _2mW
(mW)
TC = 25°C
1290
30
40
100
50
1310
40
125
200
0.5
1.0
MAX
1.4
45
1330
2000
5.0
1.5
1.0
2
TC = 0 to +70°C
Pf
Im
0
Im
(at Pf (25°C) = 2 mW)
California Eastern Laboratories