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An optically active heterostructure field effect transistor (HFET) structure is described as a three terminal detector. With an in-plane waveguide optical input it demonstrates natural optoelectronic integration with transistors. Both depletion and enhancement threshold devices are realized with photocurrent enhancement of the HFET current of 1.72 for direct coupling. A simple model of photocurrent generation based on bipolar operation provides good agreement. The bidirectional response may be suitable for optical gating functions in balanced detection.
Published in:
Photonics Technology Letters, IEEE
(Volume:23
,
Issue:
10
)
Date of Publication: May15, 2011
- Page(s):
- 633 - 635
- ISSN :
- 1041-1135
- INSPEC Accession Number:
- 11961113
- Digital Object Identifier :
- 10.1109/LPT.2011.2119476
- Product Type:
- Journals & Magazines
- Date of Publication :
- 28 February 2011
- Date of Current Version :
- 25 April 2011
- Issue Date :
- May15, 2011
- Sponsored by :
- IEEE Photonics Society
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