Fermionics High Speed Digital Arrays are designed for multichannel fiber applications based on standard 0.25 mm pitch fiber ribbon. High speed, high bandwidth InGaAs photodiodes are monolithically integrated in rows of 1 x n elements, with center-to-center spacing of 0.25 mm.
Anode contacts are located on the chip's top surface, while the bottom surface provides the common cathode. The photosensitive areas are anti-reflection coated.
Active areas of 80 µm and 140 µm are available. Analog bandwidths are approximately 2.5 GHz and 1 GHz, respectively. For details of optical and electrical characteristics, refer to the table of values for discrete devices in the section titled High Speed InGaAs Photodiodes.
A ceramic fanout mounting block, capable of accomodating up to 16 elements, is available. The ceramic features wrap-around electrodes, permitting horizontal positioning of the fiber ribbon. To view a photo of the Digital Array on ceramic fanout, click here.
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