APRIL 4, 2007 -- Hamamatsu Corp. (search for Hamamatsu) has introduced the G8931-04, a high-speed InGaAs avalanche photodiode that delivers 2.5-Gbit/sec response speed for trunk line communications in optical data networks based on SONET, GPON, or GE-PON.

In addition to high speed, the G8931-04 features a 40-micron diameter active area and can provide high signal-to-noise ratio, according to Hamamatsu. Wavelength of peak sensitivity is 1.55 microns, at which photosensitivity is typically 0.9 A/W. Dark current overall is typically 40 nA. Other advantages of the G8931-04 include low breakdown voltage (between 40 V to 60 V) and low terminal capacitance (typically 0.35 pF), the company asserts.

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