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Fiber-optic passive ring-resonator gyroscope using an external-cavity laser diode
Optics Letters
|September 11, 2009
Summary
This study presents a fiber-optic gyroscope using an external-cavity laser diode, achieving a rotation detection sensitivity of 10(-2) rad/sec. This demonstrates the viability of this laser diode for sensitive rotation measurement.
Area of Science:
- Optics and Photonics
- Inertial Navigation Systems
Background:
- Fiber-optic gyroscopes are crucial for navigation and sensing.
- External-cavity laser diodes offer tunable and stable light sources.
Purpose of the Study:
- To investigate the use of an external-cavity laser diode (ECLD) as a light source for a fiber-optic passive ring-resonator gyroscope.
- To determine the rotation detection sensitivity achievable with this configuration.
Main Methods:
- Implementation of a fiber-optic passive ring-resonator gyroscope.
- Utilizing an external-cavity laser diode as the light source.
- Optimizing the cavity length of the laser diode for gyroscope performance.
Main Results:
- The external-cavity laser diode was successfully integrated as the light source.
- A rotation detection sensitivity of 10(-2) radians per second was achieved.
- The sensitivity was obtained with an integration time of 10 seconds.
Conclusions:
- An external-cavity laser diode is a suitable light source for fiber-optic passive ring-resonator gyroscopes.
- The chosen cavity length is critical for optimal gyroscope performance.
- The developed gyroscope demonstrates significant potential for rotation sensing applications.
