Fiber Phase Shifter
Coherent or interferometric sensor systems, such as distributed acoustic sensors (DAS), often require a low loss, low-cost phase shifter or modulator to obtain the desired sensing signals. General Photonics’ 2nd generation all fiber phase shifter/modulator provides phase shifts up to 75π with a much lower half-wave voltage (~2 volts as compared with 10-20 volts for the 1st generation phase shifter) at frequencies from DC to 20 kHz. The all fiber construction practically eliminates insertion loss and back reflection. In addition to fiber sensor systems, this compact device is ideal for fiber laser systems, fiber resonators, and fiber interferometers for precision phase tuning or phase modulation.
Features:
. Low half-wave voltage
. Large phase shift range
. Compact size
. Low insertion loss
. Low residual amplitude modulation
. Low PDL
. Low cost
Applications:
. Fiber interferometers
. Fiber laser systems
. Fiber sensor systems
Preliminary Specifications:
Insertion Loss
< 0.5 dB
Return Loss
> 65 dB
Total Phase Shift ( 0 ~ 20 kHz )
75π
Half-wave Voltage ( 0 ~ 20 kHz )
~ 2V
Operating Wavelength
1260 - 1650 nm standard
PDL
< 0.05 dB
Residual Amplitude Modulation
± 0.01 dB
Operating Temperature
0 to 50 °C
Storage Temperature
-40 to 85 °C
Max. Applied Voltage
150 volts
Dimensions
35.0 (L) x 17.0 (W) x 10.0 (H) mm
Note: Values are referenced without connectors
Dimensions (in mm):
Ordering Information: