Journal
MICROMACHINES
Volume 13, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/mi13122125
Keywords
soliton microcombs; dispersion; optical amplification
Categories
Funding
- National Key Research and Development Program of China
- National Natural Science Foundation of China
- Shanghai Science and Technology Development Foundation
- [2020YFA0309400]
- [11974234]
- [20QA1403500]
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Researchers have demonstrated a combined technique to access power-sufficient optical microcombs by using a photonic-integrated soliton microcomb and home-developed erbium-doped gain fiber. This method provides sufficient optical power for applications such as telecommunications.
Soliton microcombs, offering large mode spacing and broad bandwidth, have enabled a variety of advanced applications, particularly for telecommunications, photonic data center, and optical computation. Yet, the absolute power of microcombs remains insufficient, such that optical power amplification is always required. Here, we demonstrate a combined technique to access power-sufficient optical microcombs, with a photonic-integrated soliton microcomb and home-developed erbium-doped gain fiber. The soliton microcomb is generated in an integrated Si3N4 microresonator chip, which serves as a full-wave probing signal for power amplification. After the amplification, more than 40 comb modes, with 115-GHz spacing, reach the onset power level of >-10 dBm, which is readily available for parallel telecommunications , among other applications.
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