MINIMIZING SPACE CHARGE FOR OPTICAL-ELECTRICAL DATA TRANSMISSIONS

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MINIMIZING SPACE CHARGE FOR OPTICAL-ELECTRICAL DATA TRANSMISSIONS

This abstract first appeared for US patent application 20250120214 titled 'MINIMIZING SPACE CHARGE FOR OPTICAL-ELECTRICAL DATA TRANSMISSIONS

Original Abstract Submitted

to improve an optical signal to electrical signal of a photodiode (pd) which is part of an integrated circuit, the pd can be modified to reduce noise and improve the gain bandwidth. in some aspects, the absorption region of the pd can utilize a non-rectangular geometry, for example, a clipped tapered geometry which can absorb the optical signal in more linearly than a rectangular geometry. in some aspects, the input optical signal can be split into two or more split optical signals, where each split optical signal is directed toward a different portion of the absorption region. the incident power of the optical signal transmitted to each respective portion of the absorption region can be reduced by dividing the incident power by the number of split optical signals thereby improving the gain and bandwidth saturation of each portion of the absorption region.