2745 SERIES
4
Table 3 Available Peak Wavelength Selection
(T
amb
= 25±3°C, 50 mW < P < P
op
)
Product Code
27-8000-xxx-45
27-7402-xxx-45
27-7552-xxx-45
27-7602-xxx-45
27-7702-xxx-45
Minimum Peak Wavelength
973.5 nm
973.5 nm
974.5 nm
975.0 nm
976.0 nm
Maximum Peak Wavelength
978.0 nm
975.0 nm
976.5 nm
977.0 nm
978.0 nm
Table 4 Electro-optical Performance
(BOL,T
case
= 0 to 75°C,T
LD
= 45°C, -50 dB reflection, unless noted otherwise)
Parameter
Threshold current
Forward voltage
Spectral width
Peak wavelength tuning
Side-mode suppression ratio
Relative optical power stability
Symbol
I
th
V
f
Δλ
RMS
Δλ
P
/ΔΤ
amb
SMSR
Test Condition
-
I
f
= I
op
50 mW < P < P
op
50 mW < P < P
op
50 mW < P < P
op
Peak-to-peak, T = 10 min,
50 kHz sampling, T
case
= 25 °C
20 mW < P < P
op
12 mW < P < 20 mW
3.5 mW < P < 12 mW
20 mW < P < P
op
1
20 mW < P < P
op
2
20 mW < P < P
op
T
case
= 75°C
T
case
= 75°C
-
-
Minimum
-
-
-
-
15 dB
Maximum
40 mA
2.5 V
2.0 nm
0.02 nm/°C
-
Tracking error
Tracking ratio
Monitor diode responsivity
TEC current
TEC voltage
Thermistor resistance
Thermistor constant
TE
TR
Resp
BF
I
TEC
V
TEC
R
th
B
-
-
-
-25%
0.75
2 µA/mW
-
-
9.5 kΩ
3600 K
4%
10%
25%
25%
1.25
10 µA/mW
1.5 A
2.5 V
10.5 kΩ
4200 K
1. The Tracking Error is defined as the normalized change of output power relative to the operating power over case temperature range 0°C to 75°C, at constant back face monitor current corresponding
to the operating power at 25°C.
2. The Tracking Ratio is a measure of the front-to-back tracking when the output power is varied. On a plot of optical power versus back-face photocurrent, a straight line is drawn between the minimum
power (20 mW) and the operating power P
op
points. The tracking ratio is defined as the ratio between measured optical power (shown as data points on the plot) to the value derived from the straight line.
JDSU [ JDS UNIPHASE CORPORATION ]
