Journal
CHINESE OPTICS LETTERS
Volume 19, Issue 5, Pages -Publisher
Optica Publishing Group
DOI: 10.3788/COL202119.051301
Keywords
microfiber knot resonator; graphene heater; thermo-optical modulation
Categories
Funding
- National Natural Science Foundation of China (NSFC) [51778030, 51978024]
- State Key Research Development Program of China [2019YFB2203503]
- NSFC [61875138, 61435010, 61961136001]
- Science and Technology Innovation Commission of Shenzhen [KQTD2015032416270385, JCYJ20170811093453105, JCYJ20180307164612205, GJHZ20180928160209731]
- Instrumental Analysis Center of Shenzhen University (Xili Campus)
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This paper introduces a novel thermo-optical modulator based on a microfiber knot resonator (MKR) and graphene heater, allowing for efficient tuning of output intensity with fast optical response time. The device achieves a maximum phase shift of 2.1 pi and benefits from the high thermal conductivity of graphene and the thin microfiber diameter of the MKR.
Efficiently tuning the output intensity of an optical device is of vital importance for the establishment of optical interconnects and networks. Thermo-optical modulation is an easily implemented and convenient approach and has been widely employed in photonic devices. In this paper, we proposed a novel thermo-optical modulator based on a microfiber knot resonator (MKR) and graphene heater. Upon applying voltage to graphene, the resonant property of the MKR could be thermally tuned with a maximum phase shift of 2.1 pi. Intensity modulation shows a fast optical response time thanks to the high thermal conductivity of graphene and the thin microfiber diameter of the MKR.
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