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Compact 5 GHz Balanced Detectors
Evaluation Board for BDX1 Series Detectors
Compact Balanced Detector with SMF-28 Fiber Leads (Patent Pending)
Zoomed-In View of a BDX1BA Detector
Janis Valdmanis, Ph.D. Optics
We Design, Develop, and Manufacture
|No Comments Posted|
|-3 dB Bandwidth||Impulse
|Responsivity||Fiber Connector||Fiber Type||Mode Field Diameter||Wavelength Range|
|BDX1CA||DC - 5 GHz||70 ps||1.00 A/W
at 1550 nm
|2.0 mm Narrow
|HI1060||6.2 ± 0.3 µm at 1060 nm||980 to 1650 nm|
|BDX1BA||SMF-28 Ultra||9.2 ± 0.4 µm at 1310 nm||1260 to 1625 nm|
The BDX1EVB Evaluation Board allows the user to solder a BDX1 series detector in place so that power and output connections can be made with common cables and connectors. The half-via contacts around the perimeter of the BDX1 detector can be soldered to the pre-defined contact points on the evaluation board. Included with each BDX1EVB Evaluation Board is a micro-coaxial cable that transmits the high-speed output signal through an SMA connector.
Our BDX1EVB Evaluation board features labeled connection points for making ground and power connections. Four additional test points can be used to monitor the photocurrent for each photodiode. To monitor the positive input photodiode (PD+), a high impedance voltmeter can be connected across the current sensing resistor R2 using test points TP1 and TP2. Similarly for the negative input photodiode (PD-), a high impedance voltmeter can be connected across the current sensing resistor R3 using test points TP3 and TP4. The voltmeter will read 10 mV for every 1 mA of photocurrent. Standard test leads with spring hooks (not included) should be used to make power, ground, and test point connections. Please refer to the BDX1EVB spec sheet for complete instructions on connecting and operating a BDX1EVB Evaluation Board.
The components inside this module are ESD sensitive. Take all appropriate precautions to discharge personnel and equipment before making any electrical connections to the unit. This also applies to coaxial cables that easily accumulate capacitive change. All soldering must be done by hand; a reflow oven will damage the device. Please refer to the BDX1EVB Evaluation Board spec sheet for complete mounting instructions.