PSG 2000 High-Speed Polarization State Generator
High-speed polarization state generator that switches between six distinct polarization states with 50 µs typical switching time.
- Optical input power
- 300 mW
- Operating temperature
- 0 ~ 50 °C
- Storage temperature
- -20 ~ 60 °C
Overview
The Luna PSG 2000 is a high-speed polarization state generator that produces up to six distinct polarization states (LCP, RCP, Linear ±22.5°, Linear ±67.5°) across the Poincaré sphere. Switching between two consecutive states takes less than 50 µs, with a repeatability of less than 0.1 degree.
The instrument uses a self-latching 4-bit PSG optical head. Its predictable wavelength and temperature dependence allows straightforward calibration, which makes it suitable for swept-wavelength component measurement systems. Calibration parameters are supplied so that users can calculate the actual output states of polarization at different temperatures and wavelengths.
The PSG 2000 is supplied with a user interface for manually adjusting the polarization state and for automatically sweeping selected states from the six available states. Control is available over USB 2.0 and Ethernet using SCPI commands, a C/C++ API or the PC GUI, with trigger input and output for synchronization.
Two versions are available: a C-band version operating from 1480 nm to 1620 nm and an O-band version operating from 1260 nm to 1340 nm.
Key Features
- Switches between 6 polarization states: LCP, RCP, Linear ±22.5°, Linear ±67.5°
- Typical switching time 50 µs
- SOP repeatability 0.1°
- 4-bit control
- Continuous control
- USB 2.0, Ethernet 100BASE-TX
- SCPI command, C/C++ API, PC GUI
- Trigger in/out
Specifications
| Optical input power |
300 mW
Center wavelength λc = 1550 nm or 1310 nm
|
|---|---|
| Operating temperature | 0 ~ 50 °C |
| Storage temperature | -20 ~ 60 °C |
|
Operation wavelength (C-band version)
PSG 2000 - 15 - FC/APC
|
1480 (min) / 1550 (typ.) / 1620 (max) nm
Calibrated wavelength range 1500-1580 nm; operating wavelength range 1480-1620 nm standard
|
|---|---|
|
Operation wavelength (O-band version)
PSG 2000 - 13 - FC/APC
|
1260 (min) / 1310 (typ.) / 1340 (max) nm
Calibrated range = operating wavelength range (1260-1340 nm)
|
|
Insertion loss (C-band version)
PSG 2000 - 15 - FC/APC
|
1.0 dB
With input polarization aligned to polarizer transmission axis; values referenced without connectors
|
|
Insertion loss (O-band version)
PSG 2000 - 13 - FC/APC
|
1.2 dB
With input polarization aligned to polarizer transmission axis; values referenced without connectors
|
| State dependent loss |
0.1 dB
ΔIL over all SOPs at fixed wavelength. The product web page lists 1.0 dB; datasheet value used
|
| Wavelength dependent loss |
0.3 dB
ΔIL over all wavelength at fixed SOP
|
| Return loss | -55 dB |
| Number of distinct polarization states | 6 |
| SOP relative angle accuracy at λc and 23°C |
90 ± 2 / 90 ± 5 degrees
Two values as printed in the datasheet columns; deviation from 90° of angle between output SOPs on Poincaré sphere with selected 6 distinct polarization states; relative angles on the Poincaré sphere are twice the real-space rotation angles
|
| SOP relative angle accuracy over operating ranges |
90 ± 5 / 90 ± 10 degrees
Two values as printed in the datasheet columns; over all wavelengths and temperatures in the operational ranges
|
| SOP repeatability (on Poincaré sphere) |
-0.1 to 0.1 degrees
Relative angles on the Poincaré sphere are twice the electrical field rotation angles in real space
|
| Rotation angle wavelength dependence at 1550 nm |
-0.068 degrees/nm
Relative angle between adjacent linear SOPs in real space; tested at room temperature
|
| Rotation angle wavelength dependence at 1310 nm |
-0.091 degrees/nm
Relative angle between adjacent linear SOPs in real space; tested at room temperature
|
| Rotation angle temperature dependence at 1550 nm |
-0.084 degrees/°C
Relative angle between adjacent linear SOPs in real space; tested at λc
|
| Rotation angle temperature dependence at 1310 nm |
-0.11 degrees/°C
Relative angle between adjacent linear SOPs in real space; tested at λc
|
| SOP switching time | 40 (min) / 45 (typ.) / 50 (max) µs |
| SOP dwell time |
20 / 50
Two values as printed in the datasheet; unit not stated
|
| Communication interfaces | USB 2.0, Ethernet 100BASE-TX |
|---|---|
| Control | SCIP command, C/C++ API, PC GUI |
| Trigger | Trigger in/out |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Polarization OTDR
- Polarization rotation
- Mueller matrix-based polarization analysis
- Swept-frequency measurement
- Material birefringence
- Optical imaging
Included
- Power cable
- USB 2.0 A to B cable
- USB drive for GUI and documents
Options & Accessories
| Option | Description |
|---|---|
| PSG 2000 - 15 - FC/APC | PSG 2000 High-speed polarization generator, 1480 nm to 1620 nm — PSG 2000 main frame for C and L band. Power cable, USB 2.0 A to B cable, USB drive for GUI and documents. |
| PSG 2000 - 13 - FC/APC | PSG 2000 High-speed polarization generator, 1260 nm to 1340 nm — PSG 2000 main frame for O band. Power cable, USB 2.0 A to B cable, USB drive for GUI and documents. |