In this paper, we outline the functionality of a new Fiber Bragg Grating (FBG) interrogator that has been developed
based on requirements from the Flight Test Group of a major European aircraft manufacturer and give some
performance figures regarding the dynamic measurement capabilities of the system. The interrogator is designed for
sensing the wavelength of short apodized gratings at high sampling rates and with strict requirements on the signal
quality in the frequency domain. In particular, the specifications on aliasing and phase distortion will be discussed, and
an explanation on how the system can and does meet these specs over different sampling frequencies is given.
A high resolution, high frame rate InGaAs based image sensor and associated camera has been developed. The sensor
and the camera are capable of recording and delivering more than 1700 full 640x512pixel frames per second.
The FPA utilizes a low lag CTIA current integrator in each pixel, enabling integration times shorter than one
microsecond. On-chip logics allows for four different sub windows to be read out simultaneously at even higher rates.
The spectral sensitivity of the FPA is situated in the SWIR range [0.9-1.7 µm] and can be further extended into the
Visible and NIR range.
The Cheetah camera has max 16 GB of on-board memory to store the acquired images and transfer the data over a
Gigabit Ethernet connection to the PC. The camera is also equipped with a full CameralinkTM interface to directly
stream the data to a frame grabber or dedicated image processing unit. The Cheetah camera is completely under