Fiber optic acoustic sensors

Microphone

The microphone designed by Phonoptics is an acoustic sensor adaptable to the most hostile environments in different versions :

• Standard (metal) 

• Plastic (suitable for EMI/RFI, IRM environments) 

• High temperatures (Kovar metal or ceramic, up to  350°C) 

Phonoptics has overcome the limits of microphones by using a unique optical fiber. So, the Phonoptics microphone combines small sensor size and high sensitivity while being resistant to the outdoor environment. Due to the technology developed, we can adapt the shape of the sensor to obtain previously unexpected features.

For discreet apes, go see the  Panthon1300 product sheet

Main features

Standard version

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Sensitivity :  50mV/Pa 

Bandwidth : 20 Hz to 16 kHz 

RSB (@1kHz, 1pa) : 70dB

Equivalent noise level : dB ( mPa)

Maximum pressure : 160dB (2kPa)

Event equalization : back (rear vented)

Operating temperature : -25°C to 120°C

Coefficient temperature : 0,006dB/K

Sensitivity to magnetic fields : void

Sensitivity moisture : void

Cable length : standard 1m, up to 10km (extension)

Linear mitigation : 0,4dB/km

Type of fiber : acrylate MM50/125/250

Dimension : diameter 10mm, length 20mm. Adapter ½ pouce available

Weight : 3 gram

Available in metal and plastic

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High temperature version

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Sensitivity : 10mV/Pa 

Bandwidth : 20 Hz to 16 kHz (-3dB)

RSB (@1kHz, 1pa) : 70dB

Event equalization : back (rear vented)

Operating temperature : -55°C to 250°C, 350°C temporary

Coefficient temperature : 0,006dB/K

Sensitivity to magnetic fields : void

Sensitivity moisture : void

Cable length : standard 1m, up to 100m (extension)

Linear mitigation : 0,4dB/km

Type of fiber : polyimide 50/125

Dimension : diameter 10mm, length 20mm. Adapter ½ pouce available