Product Detail
AFR high bandwidth Zero-Chirp modulators are based on the Mach-Zehnder Interferometer (MZI) architecture. The AM20 & AM40 broadband analog intensity modulators combine high linearity with low driving voltage and small footprint, covering all the frequency range from 20 GHz to beyond 40 GHz (AM20: 20-30 GHz; AM40: > 30 GHz). The increasing demand to shift the transmission frequency in analog fiber optic links towards higher frequency finds in AFR analog modulators the most advanced and suitable answer. The experience and know-how of AFR engineers is available to customize our products to the customer’s specific requirements.
Optical and Electrical Specifications
Parameter |
Conditions |
Value (AM20) |
Value (AM40) |
Unit |
Optical |
||||
Operating Wavelength |
- |
1525 - 1615 |
1525 - 1615 |
nm |
Insertion Loss |
No connectors |
< 4.5 (3.5 typ) |
< 5.0 (4.0 typ) |
dB |
With connectors |
< 5.0 (4.0 typ) |
< 5.5 (4.5 typ) |
||
Optical Return Loss |
No connectors |
> 45 |
> 45 |
dB |
Polarization Extinction ratio |
- |
> 20 (23 typ) |
> 20 (23 typ) |
dB |
Electrical – RF Port |
|
|
|
|
S21 Electro-Optic Bandwidth |
- 3 dBe |
> 20 (23 typ) |
> 30 (31 typ) |
GHz |
S11 Electrical Return Loss |
40 MHz - 20 GHz |
< - 10 (- 12 typ) |
< - 10 (- 12 typ) |
dB |
20 GHz - 35 GHz |
- |
< - 8 (- 10 typ) |
||
RF Vπ Voltage |
@ 1 kHz |
< 5.0 (4.5 typ) |
< 5.2 (4.7 typ) |
V |
@ 20 GHz |
6 |
6 |
V |
|
Electrical – Bias Port |
|
|
|
|
Bias Vπ Voltage |
@ 1 kHz |
< 5.5 (5.0 typ) |
< 5.5 (5.0 typ) |
V |
Bias Port Impedance |
@ DC |
1 |
- |
MΩ |
Photodiode Characteristic |
||||
Monitor PD Reverse Current |
- |
- |
2 |
mA |
Monitor PD Forward Current |
- |
- |
10 |
mA |
Monitor PD Reverse Voltage |
- |
- |
15 |
V |
Photodiode Responsivity |
- |
> 1 x 10-3 |
> 1 x 10-3 |
mA/W |
Linearity |
- |
± 10 |
± 10 |
% |
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