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O/E-Transducer with InGaAs-APD Photodi.

Reference: TTI-TIA-4000

The TIA-4000 is comprised of a fiber coupled InGaAs APD detector combined with a variable reverse bias voltage network and fast transimpedance amplifier



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Wolfgang Sunk
Sales & Marketing Vienna
(D) +49 8153 405-95
(A) +43 2252 251512
w.sunk@laser2000.at
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Product description

Description:

The TIA-4000 is comprised of a fiber coupled InGaAs APD detector combined with a variable reverse bias voltage network and fast transimpedance amplifier. The output of the unit 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.

The active area of the TIA-4000 is 30 microns in diameter. It is coupled to a single mode optical fiber. Typical optical return loss is 52 dB and is caused primarily by the FC/APC connector employed. The applied bias voltage controls the gain of the APD. This voltage in turn, is controlled by means of the two push buttons on the top panel. The rightmost button increases the gain and the leftmost button decreases the gain. There are 64 discrete gain settings that are retained in non-volatile memory when the power is turned off. Thus the gain setting will be retained even though power is disconnected from the unit. Pressing a button once causes the unit to advance in the selected direction by one step. Holding the button down causes the unit to advance automatically until a limit is reached.


Parameter:Specification
Detector:InGaAs/InP APD
spectral range:850 nm to 1650 nm (Gain 2-7)
transimpedance amplification:Rv = 500 Ohm
interstage coupling:AC
max. lin. power:1 mW
max. opt. power without damage:5 mW (+3 dB)
bandwidth (-3dB):30 kHz to 7 GHz
sensitivity:-25 dBm @ 10^-12 BER, 2^31-1 PRBS
noise:16 pW/?Hz
opt. input:FC/APC or FC/PC
num. aperture:0.11 (9 µm Single Mode Fiber)
opt. Returnloss:> 52 dB @ FC/APC; >35dB @ FC/PC
impedance:50 Ohm termination
el. output connector:Typ K SMA fem.
max. output voltage:0.65 V @ 50 Ohm
power requiered:PS-19 power supply incl.
dimensions:2.5" x 4.0" x 1.2"; 5 oz
operating temp. range:0° - 40°C

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