PIN detector having improved linear response

Details PIN detector having improved linear response PIN detector having improved linear response

1995-02-24

1997-01-14

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

257458, H01L 2714

Patent

active

055942377

ABSTRACT:
A PIN detector for use in the communications industry having increased linearity and increased maximum optical power detection levels without distortion is disclosed herein. To this end, a PIN structure having a high carrier mobility quaternary material cap layer and a ternary photosensitive layer is disclosed that overcomes the limitations of low mobility devices as described above. The quaternary materials have much greater carrier mobility than InP material and thereby a much shorter carrier transit time across these layers. This reduced carrier transit time effect results in a much more linear response and accordingly greatly reduced intermodulation distortion.

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PCT International Search Report. International Application No. PCT/US96/01795. International Filing Date Aug. 2, 1996.

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