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 Features
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Bandwidth: DC to 12 GHz |
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Wavelength range: 900 to 1700 nm |
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BNC connects to oscilloscope |
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Battery operation |
The TIA-1200 optical to electrical converter is a
convenient battery powered wideband detection system for fibre optic
applications. With a typical bandwidth of DC to 12 GHz (min. 10 GHz), it
accurately provides an electrical replica of the optical signal presented to
it. It is intended to drive a 50 ohm cable terminated in its characteristic
impedance.
The unit is equiped with an InGaAs/InP detector that is
responsive in the wavelength range of 900 - 1700 nm. The TIA-1200 is provided
with an FC fibre optic receptacle. Other fibre optic connectors can be provided
on request. The output signal is presented to a type K SMA female
connector.
Each unit is powered by a self-contained 9 V lithium
battery. It is employed to provide reverse bias for the detector. Battery
operation eliminates ground loops and the undesirable effects of conducted
radiation that may exist on local power lines.
The TIA-1200 is comprised of a fibre coupled InGaAs
detector coupled with a reverse bias voltage network. The output of the diode
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 load impedance produces a voltage that is proportional to the light
incident on the detector surface.
The active area of the TIA-1200 is 50 microns in
diameter. It is coupled to a 50 micron core optical fibre. Thus both singlemode
and multimode sources may be tested without incurring excessive coupling
losses.
Typical optical return loss is 35dB and is caused
primarily by the FC/PC connector employed. If higher return loss is needed, the
unit may be optionally equipped with singlemode angled PC connectors for ORLs
of around 52dB.
Battery life is approx. 100 hours and is somewhat
dependent on the average strength of the signal being monitored. Battery
replacement is indicated when the Power On LED dims noticeably or when the
received signal bandwidth appears to be reduced. An external power supply is
available for an additional cost which eliminates the use of a battery.
Specifications
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Detector type: InGaAs/InP (900-1700 nm) |
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Current responsivity: 0.7 A/W @ 1300 nm, 0.77 A/W @ 1550
nm |
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Max. linear input power: 10 mW max. |
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Max. input power without damage: 100 mW |
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Bandwidth (-3dB): DC to 12 GHZ typical, 10 GHz min. |
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Output impedance: 50 ohms |
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Output connector: Type K SMA female |
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Fibre optic input connector: FC |
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Input numerical aperture: 0.23 |
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Optical return loss: >35dB, >52dB with APC
connector |
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Power required: 9 V lithium battery powers the unit for
approx. 100 hrs |
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Dimensions: 30.5 (W) x 63 (L) x 38 (H) mm |
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Weight: 150 gm |
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Operating temperature: 0-40 C |
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Limited warranty: 2 years from date of receipt |
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