Section 2. Overview
The FPS-003 is a high speed phase shifter specially designed with an operating frequency
range of 0 to 60 kHz. In addition, it has a low V
π
both at resonance and off-resonance, so
that it can be driven with a standard function generator to achieve phase shifts of a few
π
,
or with a high voltage driver for larger phase shifts. It has an off-resonance phase shift
range of up to 55
π
.
The device is piezo driven, and the phase shift is achieved by stretching the fiber. Since
the complete optical path is in fiber, the insertion loss and back reflections are low, and
different types of fiber are available for different applications.
Figure 1 FPS-003 phase shifter
2.1
Electrical Interface
Electrical Interface: Ribbon cable with 4-pin connector
Electrical Connector: Molex WM9131-ND or equivalent
Mating Connector:
Molex WM4802-ND or equivalent
Electrical connector pinout:
Pin1
Pin 2
Pin 3
Pin 4
Pin Function
1 Positive
2
Not in use
3 Negative
4 Case
Pin 1 is marked with a triangle on the connector.
2.2
Optical Interface
The FPS-003 has 2 fiber pigtails for the input and output signals. Input and output are
interchangeable.
Document #: GP-IN-FPS-003-10
Page 5 of 9
