Abstract
We report a 1.5-μm high-responsivity waveguide quantum dot photodetector with an avalanche multiplication effect and high frequency response. With two different QD layer conditions, the responsivity and avalanche multiplication were compared and discussed. The high responsivity of 0.58 A/W and avalanche multiplication factor of around 10 could be obtained. Then, it was inferred that the impact ionization process in the quantum dot superlattice would be created in the depletion layer region, not in the InGaAlAs SL region.
| Original language | English |
|---|---|
| Title of host publication | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 |
| Publisher | OSA - The Optical Society |
| Volume | Part F122-CLEOPR 2017 |
| ISBN (Electronic) | 9781557528209 |
| Publication status | Published - 2017 Jan 1 |
| Event | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore Duration: 2017 Jul 31 → 2017 Aug 4 |
Other
| Other | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 |
|---|---|
| Country | Singapore |
| City | Singapore |
| Period | 17/7/31 → 17/8/4 |
Keywords
- Avalanche multiplication
- Frequency response
- High density quantum dot
- Photodetector
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials
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Umezawa, T., Akahane, K., Matsumoto, A., Yamamoto, N., & Kawanishi, T. (2017). Waveguide avalanche photodetector using quantum-dot superlattice for optical fiber communications. In Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 (Vol. Part F122-CLEOPR 2017). [s0963] OSA - The Optical Society.