Hamamatsu Photonics has introduced the G9905 series of GaAs PIN photodiode array receivers, which feature very high-speed response of 10 Gbps per element. The high speed, combined with its high sensitivity and low voltage power supply requirements, makes the GaAs receiver suitable for a variety of ultra-high bandwidth, short reach and optical communication applications.
The G9905 series is available in a range of different standard geometries, with 4, 8, 12 or 16 elements, allowing data bandwidths up to 160 Gbps. Each element is located on a standard 250 micron pitch and has a large 60 micron active area, allowing easy optical alignment and efficient fibre coupling. At 850 nm, the GaAs PIN photodiode has a typical photosensitivity of 0,45 A/W and typical dark current of less than 10 pA. It is also designed to operate with a very low reverse bias voltage of only 2 V.
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