High performance photodetectors for multimode optical data links

The majority of photodetectors presented in the literature, or available commercially, have dimensions on the order of 50 Ym or smaller, suitable for glass multimode or single mode fibre applications. The recent successful commercialisation of very large core diameter plastic optical fibre in systems based around 650 nm emitters, as well as the recent emergence of new polymer materials enabling relatively low loss at the more standard 780 nm and 850 nm wavelengths, has exposed the need for integrated photodetectors with dimensions well above 100 /m and capable of bitrates from 250 Mb/s for low-cost consumer applications to multiple Gb/s for high performance short reach interconnects. This size-performance regime has been largely ignored until now. This work examines interdigitated detector structures in multiple material systems by measurement and simulation. An optoelectronic frequency response measurement system was designed and implemented for this work, allowing measurement up to 8 GHz using 850 nm or 1550 nm sources. The full expression for frequency response of diffusion current under different illumination scenarios was derived, a topic normally omitted in the discussion of photodetectors, and applied to the analysis of device measurements.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2006

Author dc:creator

• Giziewicz, Wojciech Piotr, 1977-

Advisor dc:contributor.advisor

• Lionel C. Kimerling.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/38297

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/38297