Zheng, Z., Weiner, A.M., Marsh, J.H. and Karkhanehchi, M.M. (1997) Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors. IEEE Photonics Technology Letters, 9(4), pp. 493-495. (doi: 10.1109/68.559399)
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Abstract
We report measurements of the pulsewidth dependence of the two-photon absorption photocurrent in GaAs p-i-n waveguide photodetectors using subpicosecond optical pulses at 1.5 μm. For fixed pulse energy, the photocurrent is observed to depend linearly on the inverse of the optical pulsewidth. A subnanosecond electrical response is also observed. Our results show the feasibility of applying such devices for nonlinear processing in ultrafast optical code-division multiple-access and other ultra high-speed optical network applications.
| Item Type: | Articles |
|---|---|
| Additional Information: | The work of Z. Zheng and A. M. Weiner was supported by the AFOSR under Contract F49620-95-1-0533. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Marsh, Professor John |
| Authors: | Zheng, Z., Weiner, A.M., Marsh, J.H., and Karkhanehchi, M.M. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Photonics Technology Letters |
| Publisher: | IEEE |
| ISSN: | 1041-1135 |
| ISSN (Online): | 1941-0174 |
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