Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer
We have designed the MUTC-PD with an optimized thickness of cliff layer to pre-distort the electric field at the front side of the collection layer. With the optimized MUTC-PD design, the collapse of the electric field will be greatly suppressed, and the electrons in its collection layer will gradua...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/24/7/2020 |
| _version_ | 1797212024282808320 |
|---|---|
| author | Xiaowen Dong Kai Liu |
| author_facet | Xiaowen Dong Kai Liu |
| author_sort | Xiaowen Dong |
| collection | DOAJ |
| description | We have designed the MUTC-PD with an optimized thickness of cliff layer to pre-distort the electric field at the front side of the collection layer. With the optimized MUTC-PD design, the collapse of the electric field will be greatly suppressed, and the electrons in its collection layer will gradually reach their peak velocity with the growing incident light power. Moreover, as the incident light intensity increases, the differential capacitance also declines, thus the total bandwidth grows. It will make the MUTC-PD achieve high-speed and high-power response performance simultaneously. Based on simulation, for 16μm MUTC-PD with a 70 nm cliff layer, the maximum 3 dB bandwidth at −5 V is 137 GHz, compared with 64 GHz for the MUTC-PD with a 30 nm cliff layer. The saturation RF output power is 27.4 dBm at 60 GHz. |
| first_indexed | 2024-04-24T10:35:48Z |
| format | Article |
| id | doaj.art-9cb886befd8b4642bd8caa1f04702f28 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-24T10:35:48Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9cb886befd8b4642bd8caa1f04702f282024-04-12T13:25:59ZengMDPI AGSensors1424-82202024-03-01247202010.3390/s24072020Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff LayerXiaowen Dong0Kai Liu1State Key Laboratory of Information Photonics and Optical Communications, School of Electrical and Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaState Key Laboratory of Information Photonics and Optical Communications, School of Electrical and Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaWe have designed the MUTC-PD with an optimized thickness of cliff layer to pre-distort the electric field at the front side of the collection layer. With the optimized MUTC-PD design, the collapse of the electric field will be greatly suppressed, and the electrons in its collection layer will gradually reach their peak velocity with the growing incident light power. Moreover, as the incident light intensity increases, the differential capacitance also declines, thus the total bandwidth grows. It will make the MUTC-PD achieve high-speed and high-power response performance simultaneously. Based on simulation, for 16μm MUTC-PD with a 70 nm cliff layer, the maximum 3 dB bandwidth at −5 V is 137 GHz, compared with 64 GHz for the MUTC-PD with a 30 nm cliff layer. The saturation RF output power is 27.4 dBm at 60 GHz.https://www.mdpi.com/1424-8220/24/7/2020electric-field pre-distortsaturation current densityoptimized cliff layer |
| spellingShingle | Xiaowen Dong Kai Liu Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer Sensors electric-field pre-distort saturation current density optimized cliff layer |
| title | Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer |
| title_full | Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer |
| title_fullStr | Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer |
| title_full_unstemmed | Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer |
| title_short | Modified Uni-Traveling-Carrier Photodetector with Its Optimized Cliff Layer |
| title_sort | modified uni traveling carrier photodetector with its optimized cliff layer |
| topic | electric-field pre-distort saturation current density optimized cliff layer |
| url | https://www.mdpi.com/1424-8220/24/7/2020 |
| work_keys_str_mv | AT xiaowendong modifiedunitravelingcarrierphotodetectorwithitsoptimizedclifflayer AT kailiu modifiedunitravelingcarrierphotodetectorwithitsoptimizedclifflayer |