Data acquisition unit for fiber Bragg grating (FBG) interrogation
BaySpec

The device covers wide wavelength ranges and provides simultaneous measurements at very fast response rates and excellent wavelength resolution. High reliability (MIL STD 810E shock and vibration) is achieved through a rugged mechanical design with no moving parts. Periodic calibration is not required. Input/Output (I/O) is provided through a dual port RAM interface accessed through ADD/DAT bus direct connection or serial (RS232 or USB) communications

The WaveCaptureTM FBGA Series employs a highly efficient Volume Phase Grating (VPG®) as the spectral dispersion element and an ultra sensitive InGaAs array detector as the detection element, thereby providing high-speed parallel processing and continuous spectrum measurements. As an input, the device uses a tapped signal from the main data transmission link through a single mode fiber, then collimating it with a micro lens. The signal is spectrally dispersed with the VPG®, and the diffracted field is focused onto an InGaAs array detector. The control electronics read out the processed digital signal to extract required information. Both the raw data and the processed data are available to the host.

Key Features

- +/- 30pm EOL wavelength accuracy (see FBGA-IRS for higher wavelength accuracy)
- Excellent wavelength stability
- Athermal design enabling battery-operated portable operation
- Frequency response up to 5kHz
- Wide scanning range
- High dynamic range - 50 dB
- Hermetically sealed for use in harsh environment
- MIL STD 810F qualified
- Compact, card-mountable design