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Fiber-optic polarization and phase modulator utilizing transparent piezofilm with indium tin oxide electrodes
Applied Optics
|November 2, 2010
Summary
This study presents an efficient optical modulator using piezofilm for polarization and phase control. The device demonstrates significant modulation capabilities, enabling advanced optical signal processing applications.
Area of Science:
- Optoelectronics
- Materials Science
Background:
- Optical modulators are crucial components in optical communication and signal processing.
- Developing efficient and versatile modulators with simultaneous polarization and phase control remains a key challenge.
Purpose of the Study:
- To present a novel optical polarization and phase modulator.
- To characterize its performance across various configurations and frequencies.
Main Methods:
- Integration of a transparent piezofilm with indium tin oxide electrodes into an optical fiber output path.
- Testing different clamping conditions, epoxy utilization, and optical arrangements.
- Measurement of phase-shifting coefficients, intrinsic birefringence, and polarization modulation coefficients.
Main Results:
- Demonstrated linear phase-shifting coefficients of 0.131 rad/Vp at 2 kHz and 0.508 rad/Vp at 7.4 kHz for a 63.9 µm film.
- Measured an intrinsic birefringence of 0.0328.
- Determined a polarization modulation coefficient of 0.323 rad/Vp at 8.423 kHz, with a half-wave voltage of 8.353 Vp.
Conclusions:
- The developed piezofilm-based device offers efficient optical polarization and phase modulation.
- The device's capabilities support applications requiring concurrent spatiotemporal control of optical signals.
