Simultaneous ultrasonic vibration and gas sensing based on a tunable fiber ring laser

A method for simultaneously measuring vibration and detecting the presence of a target gas in an environment comprising:

• providing a system for simultaneously measuring vibration and detecting a target gas into an environment, wherein the system is a tunable ring laser in electronic and optical communication with both a vibration sensor and a gas detection sensor;
• sending an optical signal to a vibration sensor and gas detection sensor, wherein sending an optical signal to the vibration sensor and gas detection sensor comprises sending an optical signal from the tunable ring laser to the vibration and gas detection sensor, causing the vibration sensor to emit a modified signal that differs from the original signal from the tunable ring laser based on the amount of vibration that is incident upon the vibration sensor, and causing the gas detection sensor to emit a modified signal that differs from the original signal from the tunable ring laser based on the amount of a target gas present around the gas detection sensor;
• and
• collecting and analyzing modified signals from the vibration sensor and gas detection sensor.