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Discovering the 10 Gb/s InGaAs APD

A new versatile indium gallium arsenide device aims to maximise test time by simplifying measurement in analogue RF links and ultrafast digital communications

Discovery Semiconductors is  introducing a 10 Gb/s InGaAs APD + TIA + CDR Lab Buddy instrument for SONET, Ethernet, PON, and Fibre Channel applications.

Discovery is also offering both its 10GHz linear PIN + TIA and 10 Gb/s High-Sensitivity Limiting PIN + TIA with a CDR Lab Buddy option. The O/E section provides the receive and regenerate functions, and the CDR provides the clock and data recovery function from the input signal.

Discovery’s APD + CDR Lab Buddy includes a limiting amplifier with LOS power detector, and PLL data re-timer with a LOL indicator. The Lab Buddy supports multi-rate operation from 9.5 Gb/s up to 11.1 Gb/s. The CDR function has a 7mVp-p Input Sensitivity and 0.6UIp-p total high-frequency jitter tolerance. The clock and data outputs are compatible with BER test stations.

What's more, the APD + CDR Lab Buddy has a programmable bias voltage source and a built-in temperature controller for improved gain stabilization and increased reliability. The bias and temperature can be set either from the front panel or via a remote computer interface. The APD + CDR Lab Buddy monitors the bias, temperature, and average DC photocurrent of the APD in real-time.

Roy Howard, Applications Specialist at Discovery Semiconductors added, “The new APD + CDR Lab Buddy aims to maximise your test time by simplifying your measurement. This is accomplished through the combination of the O/E & CDR functions by providing both clock and data electrical outputs conveniently to your scope or BERT.”

Discovery Semiconductors is a manufacturer of ultrafast, high optical power handling InGaAs photodiodes, radio frequency over fibre optical receivers, balanced optical receivers and several other custom products for applications ranging from analogue RF links to ultrafast digital communications. Discovery’s subsystems include Kitty Hawk, an ultra-fast Optical Coherent System.
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