Data Sheet
May 2001
10 Gbits/s Lithium Niobate Electro-Optic Modulator
Optical/Electrical Characteristics
Table 1. Optical/Electrical Characteristics
Parameter
Min
Typ
Operating Wavelength:
C-band
1525
—
L-band
1565
—
Insertion Loss:
2623N, 2623Y, 2623CS
3
3.7
2623CSA
3.5
4.5
Extinction Ratio @ dc
20
27
Extinction Ratio @ RF
—
13
S11 Optical Return Loss
—
—
Bandwidth*
8
10
Drive Voltage (Vπ) @ dc
2.8
3.1
Drive Voltage (Vπ) @ 1 GHz
3.5
4.1
Attenuation Voltage @ –19 dB
15
19
Electrode Impedance
—
43
S11 Electrical Return Loss (0.13 GHz—5 GHz)
—
–15
S11 Electrical Return Loss (5 GHz—10 GHz)
–
–14
S11 Electrical Return Loss (10 GHz—18 GHz)
—
–8
Max
1565
1620
5.5
6.5
—
—
–35
—
4.0
5.0
22
—
–13
–12
–6
Unit
nm
nm
dB
dB
dB
dB
dB
GHz
V
V
V
Ω
dB
dB
dB
* Bandwidth stated is electrical-optical-electrical as determined by the ratio of the received RF electrical power (at a photodiode) relative to the
RF electrical power used to drive the modulator. This response is referenced to the value at 130 MHz.
dc BIAS
CONTROLLER
HIGH-
SPEED
DATA
INPUT
MODULATOR
DRIVER
BIAS
TEE
SEE NOTE.
dc
ATTENUATION
CONTROLLER
PHOTODETECTOR/
PREAMP
CW-LASER
PMF
2623N, 2623Y, 2623CS, 2623CSA
Note: Circuitry in dotted lines is used only with the 2623CSA.
SPLITTER
Figure 1. Recommended Operating Circuit Diagram
Agere Systems Inc.
43 Ω
0.2 µF
2623N, 2623Y, 2623CS
43 Ω
0.2 µF
2623CSA
–10 pF
Figure 2. Equivalent Circuit Diagram
1-1062 (F)
1-1063 (F)
3