Luna FPS-002 Fiber Phase Shifter
All-fiber, piezo-driven phase shifter with a low half-wave voltage for phase shifting or modulation from DC to 20 kHz.
- Fiber type (SM)
- 1310/1550nm: Corning ClearCurve ZBL or equiv.; 1060nm: Corning HI1060 or equiv.; 780nm: Nufern 780HP or equiv.
- Fiber type (PM)
- 1550nm: Bend insensitive PM with MFD=6.5μm; 1310nm: Bend insensitive PM with MFD=6.0μm; 1060nm: Nufern PM 980XP or equiv
- Insertion loss (IL)
- <0.5 dB
- Return loss
- >58 dB without connectors; >55 dB with APC connectors; >50 dB with PC connectors
Overview
The FPS-002 is a small, piezo-driven fiber phase shifter that shifts or modulates optical phase by stretching a length of fiber. It operates at frequencies from DC to 20 kHz.
Compared with the first-generation FPS-001, the FPS-002 has a lower half-wave voltage (about 2 V versus 10-20 V). Like the FPS-001, it uses an all-fiber optical path, which keeps insertion loss and back reflection low.
Two package sizes are available to accommodate the bend diameter requirements of different fiber types. When operated at its resonance frequency, the half-wave voltage is low enough for the device to be driven directly by a function generator.
The FPS-002 can be used for fine phase adjustment or to add a dither in interferometric systems, including coherent and interferometric fiber sensor systems such as distributed acoustic sensors, fiber laser systems, fiber resonators and fiber interferometers.
Key Features
- Small half-wave voltage
- Low insertion loss, PDL and residual amplitude modulation
- Frequencies up to 20 kHz
- Compact
- All-fiber optical path
- Large phase shift range
- Two package sizes for different fiber bend diameter requirements
Specifications
| Fiber type (SM) | 1310/1550nm: Corning ClearCurve ZBL or equiv.; 1060nm: Corning HI1060 or equiv.; 780nm: Nufern 780HP or equiv. |
|---|---|
| Fiber type (PM) | 1550nm: Bend insensitive PM with MFD=6.5μm; 1310nm: Bend insensitive PM with MFD=6.0μm; 1060nm: Nufern PM 980XP or equiv |
| Insertion loss (IL) |
<0.5 dB
At λc, excluding mode coupling loss and connectors
|
| Return loss | >58 dB without connectors; >55 dB with APC connectors; >50 dB with PC connectors |
| PDL (SM fiber) |
<0.05 dB
Excluding connectors
|
| PDL (PM fiber) |
<0.1 dB
Excluding connectors
|
| PER (PM fiber) |
>18 dB
With connectors
|
| Residual amplitude modulation |
±0.01 dB
At 1550nm
|
| Frequency range | 0-20 kHz |
|---|---|
| Total phase shift range (500 Hz) |
>65π
At 1550nm
|
| Half-wave voltage (500 Hz), small frame | 2.5-4.5V |
| Half-wave voltage (500 Hz), large frame | 0.7-1.5V |
| Resonance frequency |
8-14 kHz
Typical
|
| Half-wave voltage (resonance) |
0.1-0.5V
Typical
|
| Maximum applied voltage | 150V |
|---|---|
| Electrical interface | Molex WM9131-ND or equivalent |
| Internal fiber length (fiber inside enclosure), small frame | 36 ± 2 cm |
|---|---|
| Internal fiber length (fiber inside enclosure), large frame | 93 ± 2 cm |
| Operation temperature | 0 to 50°C |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Optical coherence tomography (OCT)
- OEM modules for fiber optic sensing
- Distributed acoustic sensors (DAS)
- Fiber interferometers
- Fiber laser systems
- Fiber sensor systems
- Fiber resonators
Options & Accessories
| Option | Description |
|---|---|
| 35 | Wavelength 1310/1550nm (SM fiber) |
| 10 | Wavelength 1060nm |
| 15 | Wavelength 1550nm (PM) |
| 13 | Wavelength 1310nm (PM) |
| FC/PC, FC/APC | FC connectors |
| SC/PC, SC/APC | SC connectors |
| NC | No connectors |
Documents & Resources
Related Products
All-fiber, piezo-driven phase shifter and modulator for phase shifts at frequencies from DC to 20 kHz.
Piezo-driven all-fiber phase shifter/modulator with modulation bandwidth up to 60 kHz and low half-wave voltage, driven by standard function generators.
Piezo-driven fiber stretcher module from Luna with an optical path delay range of more than 3 mm and analog or 12-bit TTL control.
Compact, fiber-coupled, manually adjusted free-space optical delay line with 130 ps single-pass range and a position lock.
Fiber-coupled manual variable optical delay line with a free-space delay path, offering up to 600 ps single-pass or 1200 ps double-pass delay.
Fiber-coupled motorized free-space optical delay line with up to 560 ps single-pass delay and 1 fs (0.3 µm) resolution per encoder count.
Fiber-coupled miniature motorized free-space optical delay line for OEM use, with a 100 ps single-pass delay range and stepper motor control.
Fiber-coupled manual variable optical delay line with a free-space path, up to 250 ps single-pass delay range and position locking.