NDL7705P_00 Datasheet, PDF (1/4 Pages) NEC – 1500 nm OPTICAL FIBER COMMUNICATIONS InGaAsP MQW-DFB LASER DIODE COAXIAL MODULE

1500 nm OPTICAL FIBER
COMMUNICATIONS InGaAsP
MQW-DFB LASER DIODE COAXIAL MODULE
NDL7705P
SERIES
FEATURES
• PEAK EMISSION WAVELENGTH:
λP = 1550 nm
• OPTICAL OUTPUT POWER:
Pf = 2.0 mW
• INTERNAL OPTICAL ISOLATOR
• InGaAs MONITOR PIN-PD
• WIDE OPERATING TEMPERATURE RANGE:
TC = -40 to +85°C
• λ/4 - PHASE-SHIFTED DFB
DESCRIPTION
The NDL7705P Series is a 1550 nm phase-shifted DFB
(Distributed Feed-Back) laser diode module with optical
isolator. Newly developed strained Multiple Quantum Well
(MQW) structure is adopted to achieve stable dynamic single
longitudinal mode operation over a wide temperature range of
-40 to +85°C. It is designed for all STM-1and STM-4
applications.
ELECTRO-OPTICAL CHARACTERISTICS (TC = -40 to +85°C, unless otherwise specified)
PART NUMBER
PACKAGE OUTLINE
NDL7705P Series
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
VF
Forward Voltage, IF = 30 mA
V
0.9
ITH
Threshold Current, TC = 25˚C
mA
15
TC = 85˚C
35
ηd
Differential Efficiency from Fiber, TC = 25˚C
TC = 85˚C
W/A
0.070
0.035
0.120
0.075
∆ηd
Temperature Dependence of Differential Efficiency
dB
-3
-2
from Fiber, ∆ηd = 10 log ^{ηd (TC = 85° C)}
ηd (TC = 25° C)
λp
Peak Emission Wavelength, Pf = 1 mW
nm
1530
1550
SMSR
Side Mode Suppression Ratio, Pf = 1 mW
dB
30
tr
Rise Time, Ib = 0.9 x Ith ns
0.5
tf
Fall Time, Ib = 0.9 X Ith ns
0.5
Im
Monitor Current, VR = 5 V, Pf = 2 mW
µA
300
ID
Monitor Dark Current, VR = 5 V, TC = 25°C
nA
0.1
γ¹
Tracking Error, Im = const.(Pf = 2 mW, TC = 25˚C)
dB
RIN
Relative Intensity Noise, Ref = -14 dB, Pf = 1 mW
dB/Hz
-140
Note:
Pf
1. γ = 10 log _{2 mW}
Pf
(mW)
TC = 25°C
2
TC = -40 to +85°C
Pf
Im
0
Im
(at Pf (25°C) = 2 mW)
MAX
1.3
50
1570
2500
5
1.0
-130
California Eastern Laboratories