On-chip erbium-doped lithium niobate waveguide amplifiers [Invited]
Abstract
Lithium niobate on insulator (LNOI), as an emerging and promising optical integration platform, faces shortages of on-chip active devices including lasers and amplifiers. Here, we report the fabrication on-chip erbium-doped LNOI waveguide amplifiers based on electron beam lithography and inductively coupled plasma reactive ion etching. A net internal gain of ~30 dB/cm in communication band was achieved in the fabricated waveguide amplifiers under the pump of a 974-nm continuous laser. This work develops new active devices on LNOI and will promote the development of LNOI integrated photonics.
- Publication:
-
Chinese Optics Letters
- Pub Date:
- 2021
- DOI:
- 10.3788/COL202119.060008
- arXiv:
- arXiv:2103.15786
- Bibcode:
- 2021ChOpL..19f0008L
- Keywords:
-
- Physics - Optics;
- Physics - Applied Physics
- E-Print:
- 8 pages,4 figures