| Autor: |
Bin Chen, Ziliang Ruan, Xuancong Fan, Zong Wang, Jie Liu, Chijun Li, Kaixuan Chen, Liu Liu |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
APL Photonics, Vol 7, Iss 7, Pp 076103-076103-7 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2378-0967 |
| DOI: |
10.1063/5.0093033 |
| Popis: |
A grating coupler with a high coupling efficiency and low back reflections is designed and demonstrated on the thin film lithium niobate platform, which facilitates an efficient interface between a lithium niobate ridge waveguide and a standard single mode fiber. The excellent performances of the present grating coupler are enabled by a cavity-assisted grating structure and a top metal mirror, even though a uniform grating is adopted as the diffractive element. Experimentally, a coupling loss of −0.89 dB at 1552 nm is demonstrated with a 1-dB bandwidth of 45 nm. Low back reflections of |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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