On-chip optical isolator and nonreciprocal parity-time symmetry induced by stimulated Brillouin scattering
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2018
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915114340319232 |
|---|---|
| author | Ma, Jiyang Wen, Jianming Hu, Yong Ding, Shulin Jiang, Xiaoshun Jiang, Liang Xiao, Min |
| author_facet | Ma, Jiyang Wen, Jianming Hu, Yong Ding, Shulin Jiang, Xiaoshun Jiang, Liang Xiao, Min |
| contents | Realization of chip-scale nonreciprocal optics such as isolators and circulators is highly demanding for all-optical signal routing and protection with standard photonics foundry process. Owing to the significant challenge for incorporating magneto-optical materials on chip, the exploration of magnetic-free alternatives has become exceedingly imperative in integrated photonics. Here, we demonstrate a chip-based, tunable all-optical isolator at the telecommunication band based upon bulk stimulated Brillouin scattering (SBS) in a high-Q silica microtoroid resonator. This device exhibits remarkable characteristics over most state-of-the-art implements, including high isolation ratio, no insertion loss, and large working power range. Thanks to the guided acoustic wave and accompanying momentum-conservation condition, SBS also enables us to realize the first nonreciprocal parity-time symmetry in two directly-coupled microresonators. The breach of time-reversal symmetry further makes the design a versatile arena for developing many formidable ultra-compact devices such as unidirectional single-mode Brillouin lasers and supersensitive photonic sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1806_03169 |
| institution | arXiv |
| publishDate | 2018 |
| record_format | arxiv |
| spellingShingle | On-chip optical isolator and nonreciprocal parity-time symmetry induced by stimulated Brillouin scattering Ma, Jiyang Wen, Jianming Hu, Yong Ding, Shulin Jiang, Xiaoshun Jiang, Liang Xiao, Min Optics Realization of chip-scale nonreciprocal optics such as isolators and circulators is highly demanding for all-optical signal routing and protection with standard photonics foundry process. Owing to the significant challenge for incorporating magneto-optical materials on chip, the exploration of magnetic-free alternatives has become exceedingly imperative in integrated photonics. Here, we demonstrate a chip-based, tunable all-optical isolator at the telecommunication band based upon bulk stimulated Brillouin scattering (SBS) in a high-Q silica microtoroid resonator. This device exhibits remarkable characteristics over most state-of-the-art implements, including high isolation ratio, no insertion loss, and large working power range. Thanks to the guided acoustic wave and accompanying momentum-conservation condition, SBS also enables us to realize the first nonreciprocal parity-time symmetry in two directly-coupled microresonators. The breach of time-reversal symmetry further makes the design a versatile arena for developing many formidable ultra-compact devices such as unidirectional single-mode Brillouin lasers and supersensitive photonic sensors. |
| title | On-chip optical isolator and nonreciprocal parity-time symmetry induced by stimulated Brillouin scattering |
| topic | Optics |
| url | https://arxiv.org/abs/1806.03169 |