TIA-40000 pages

TIA-4000
O/E Converter
Optical Oscilloscope
Probe

Benefits:
• Wavelength Response 950 nm to 1650 nm • Bandwidth 30 KHz to 7 GHz typical
• Low Noise, High Gain
• SMA type K Output Electrical Connector
• Gain Settings from 2 to 7
• FC/APC Style Fiber Optic Input Connector

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.

Specifications
Detector Type.........................InGaAs/InP APD (950-1650) Gain 2 - 7
Transimpedance Gain...............500 Ohms
Maximum Linear Input Power..1 mW Max.
Input Without Damage.............5 mW, +3 dBm
Bandwidth (-3 dB)...................30 KHz to 7 GHz typical
Sensitivity...............................-25 dBm @ 10-12BER, 231-1 PRBS
Output Impedance...................Terminate in 50 Ohms
Output Connector....................Type K SMA female
Fiber Optic Input Connector.....FC-APC or FC-PC
Input Numerical Aperture....... 0.11
Optical Return Loss................>52 dB with APC conn, >35 dB FC - PC
Power Required......................120/240 VAC, 50-60Hz
Dimensions.............................4.0” L, 2.5” W, 1.2” H, (102 , 63 , 31 mm)
Weight .............................. 5 oz., 150 g.
Operating Temperature...........0 - 40 C
Limited Warranty................... 2 Years from date of receipt