Optical-electrical converter TIA-3000

fiber opticfast

Features • Bandwidth to 10 GHz (SM) 8.5 GHz (MM) • Wavelength response: 800 to 1600 nm • Low noise, high gain • Conversion gain to 400 V/W • SMA output electrical connector • FC style fibre optic input connector The TIA-3000 is an instrument for the laboratory or for field use. This amplified optical-electrical converter can be used with a wide range of oscilloscopes and digitisers to provide the utility of a convenient, easy to use fibre optic probe. Energising the unit, the optical signal presented to it is faithfully reproduced on the CRT of the oscilloscope or digitiser. Applications for this instrument include: checking the output of fibre optic communication links, data links, fibre optic computer networks, eye pattern testing, the operation of laser sources and the signal from an optical transmitter. Patch cords with various style fibre optic connectors can expand the utility of the instrument. The TIA-3000 is comprised of a fibre coupled InGaAs detector coupled with a reverse bias voltage network and fast transimpedance amplifier. The output of the unit is brought out to a type K female SMA connector. Light falling on the detector generates a positive-going proportional current. This current, multiplied by the transimpedance produces a voltage that is proportional to the light incident on the detector surface. Normally the unit is used to drive a coaxial cable. This cable should have a 50 ohm characteristic impedance and be terminated with a 50 ohm load at the oscilloscope or other measuring device to be used.