Expanding detection bandwidth via a photonic reservoir for ultrafast optical sensing
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917006658240512 |
|---|---|
| author | Ito, Yuito Niiyama, Tomoaki Asai, Tetsuya Tanaka, Gouhei Uchida, Atsushi Sunada, Satoshi |
| author_facet | Ito, Yuito Niiyama, Tomoaki Asai, Tetsuya Tanaka, Gouhei Uchida, Atsushi Sunada, Satoshi |
| contents | The detection of ultrafast optical and radio-frequency (RF) signals is crucial for applications ranging from high-speed communications to advanced sensing. However, conventional detectors are fundamentally constrained by their intrinsic bandwidth, limiting accurate broadband signal measurement. Here, we show that a neuromorphic photonic processing approach can overcome this limitation, enabling accurate broadband signal detection beyond the detector bandwidth. The key idea lies in the spatiotemporal encoding of input waveforms within a photonic reservoir network, which reconstructs high-frequency components otherwise inaccessible to individual detectors. We experimentally demonstrate the detection of high-speed optical phase signals with more than an eightfold effective bandwidth expansion using an on-chip silicon photonic reservoir. This approach provides a scalable and integrable platform for high-speed optical and RF signal processing, opening new opportunities in ultrafast photonics and next-generation communication systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_10404 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Expanding detection bandwidth via a photonic reservoir for ultrafast optical sensing Ito, Yuito Niiyama, Tomoaki Asai, Tetsuya Tanaka, Gouhei Uchida, Atsushi Sunada, Satoshi Optics Emerging Technologies The detection of ultrafast optical and radio-frequency (RF) signals is crucial for applications ranging from high-speed communications to advanced sensing. However, conventional detectors are fundamentally constrained by their intrinsic bandwidth, limiting accurate broadband signal measurement. Here, we show that a neuromorphic photonic processing approach can overcome this limitation, enabling accurate broadband signal detection beyond the detector bandwidth. The key idea lies in the spatiotemporal encoding of input waveforms within a photonic reservoir network, which reconstructs high-frequency components otherwise inaccessible to individual detectors. We experimentally demonstrate the detection of high-speed optical phase signals with more than an eightfold effective bandwidth expansion using an on-chip silicon photonic reservoir. This approach provides a scalable and integrable platform for high-speed optical and RF signal processing, opening new opportunities in ultrafast photonics and next-generation communication systems. |
| title | Expanding detection bandwidth via a photonic reservoir for ultrafast optical sensing |
| topic | Optics Emerging Technologies |
| url | https://arxiv.org/abs/2510.10404 |