Photodiode with fiber mode dispersion compensation

Details Photodiode with fiber mode dispersion compensation Photodiode with fiber mode dispersion compensation

2005-07-20

2009-12-29

Rose, Kiesha L. (Department: 2891)

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

Responsive to electromagnetic radiation

C438S059000, C257S461000, C257S462000, C257S463000, C257S464000, C257S465000, C257SE31011, C257SE31014, C257SE31107, C398S143000, C398S144000, C398S202000, C398S214000

Reexamination Certificate

active

07638351

ABSTRACT:
A photodiode and a method of fabricating a photodiode for reducing modal dispersion and increasing travel distance. The central region of the photodiode is made less responsive to incident light than a peripheral region of the photodiode. The less responsive central region discriminates the lower order modes such that only the higher order modes are incident on the more responsive peripheral region. Because the lower order modes are subtracted, the range of propagation constants is reduced and modal dispersion is also reduced.

REFERENCES:
patent: 6002142 (1999-12-01), Paoli
Patel, enhanced multimode fiber link performance using a spatically resolved receiver, IEEE, pp. 393-395, 2002.
Patel, Ketan M. and Ralph, Stephen E.MMF Reach Extension for 10 Gbps by Spatially Resolved Equalization, Georgia Institute of Technology School of Electrical and Computer Engineering, Atlanta, GA 2004.

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