LUNA FPS-002 Fibre Phase Shifter
The LUNA FPS-002 is an all fibre device that shifts or modulates phase by up to 75π at frequencies from DC to 20 kHz.
- Small half-wave voltage
- Low IL, PDL, and residual amplitude modulation
- Frequencies up to 20 kHz
- Compact
The LUNA FPS-002 is a small, piezo-driven phase shifter that works by stretching a length of fibre. It has a lower half-wave voltage than the FPS-001 (~2V compared to 10-20V). Like the FPS-001, it is an all fibre design and offers the benefits of low loss and back reflection.
Two different size packages are available to accommodate the bend diameter requirements of different fibres.
The LUNA FPS-002 is useful for phase shifts of up to several tens of π at frequencies up to 20 kHz. Especially when used at resonance, the Vπ is very small, so it can be driven by a function generator. It can be used for fine adjustment or to add a dither in interferometric applications.
| Frequency range | 0-20 kHz |
|---|---|
| Total phase shift range (500 Hz) | >65π (1550nm) |
| Half-wave voltage (500 Hz) | 2.5-4.5V (small frame) 0.7-1.5V (large frame) |
| Resonance frequency | 8-14 kHz typical |
| Half-wave voltage (resonance) | 0.1-0.5V typical |
| Fiber type |
SM: 1310/1550nm: Corning ClearCurve ZBL or equiv. 1060nm: Corning HI1060 or equiv. |
| IL | <0.5 dB (at λ c , excluding mode coupling loss and connectors |
| PDL | SM: <;0.05 dB (excluding connectors) PM: <0.1 dB (excluding connectors) |
| Residual amplitude modulation | ±0.01 dB (1550nm) |
| PER | PM: >18 dB, with connectors |
| Internal fiber length (fiber inside enclosure) |
36 ± 2 cm (small frame) 93 ± 2 cm (large frame) |
LUNA FPS-002 datasheet | Photo | Product | SKU | |
|---|---|---|---|
 | LUNA FPS-001 Phase Shifter | - | > |
 | LUNA FPS-003 Fibre Phase Modulator/Shifter | - | > |