A new, monolithic encoding digital photodetecter array

Xuan Huang

doi:10.1117/12.2294674

1 July 1990 A new, monolithic encoding digital photodetecter array

Xuan Huang

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 123011 (1990) https://doi.org/10.1117/12.2294674
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

Abstract

At present, each element of the photodetecter array (PDA) is an individual source providing electronic signal, it must be connected with a seperate signal amplifying circuits. The more the array elements are, the more complex the circuits are. Another problem is that this kind of PDA has a high false-code-rate. We have designed and manufactured a new monolithic encoding digital PDA adopting the Gray encoding mode which has low false-code- rate. It is made of 32 photodiodes on one silicon chip. All 32 photodiodes is divided into six groups according a certain pattern, then connected to six output points followed by six groups of hybrid integrated amplifieres where the electronic signal is amplified and out put a 6-bit binary digit according Gray code. They are all mounted in a single sealed package. If the design is changed, similar encoding digital photodetecter array can also out put other bits binary code. Some measurement results is presented.

Citation Download Citation

Xuan Huang "A new, monolithic encoding digital photodetecter array", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 123011 (1 July 1990); https://doi.org/10.1117/12.2294674

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