Break the efficiency limitations of dissipative Kerr soliton using nonlinear couplers
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| Soggetti: | |
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| _version_ | 1866929209019990016 |
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| author | Li, Ming Xue, Xiao-Xiao Zhang, Yan-Lei Xu, Xin-Biao Dong, Chun-Hua Guo, Guang-Can Zou, Chang-Ling |
| author_facet | Li, Ming Xue, Xiao-Xiao Zhang, Yan-Lei Xu, Xin-Biao Dong, Chun-Hua Guo, Guang-Can Zou, Chang-Ling |
| contents | Dissipative Kerr soliton (DKS) offers a compact solution of coherent comb sources and holds huge potential for applications, but has long been suffering from poor power conversion efficiency when driving by a continuous-wave laser. Here, a general approach to resolving this challenge is provided. By deriving the critical coupling condition of a multimode nonlinear optics system in a generalized theoretical framework, two efficiency limitations of the conventional pump method of DKS are revealed: the effective coupling rate is too small and is also power-dependent. Nonlinear couplers are proposed to sustain the DKS indirectly through nonlinear energy conversion processes, realizing a power-adaptive effective coupling rate to the DKS and matching the total dissipation rate of the system, which promises near-unity power conversion efficiencies. For instance, a conversion efficiency exceeding $90\:\%$ is predicted for aluminum nitride microrings with a nonlinear coupler utilizing second-harmonic generation. The nonlinear coupler approach for high-efficiency generation of DKS is experimentally feasible as its mechanism applies to various nonlinear processes, including Raman and Brillouin scattering, and thus paves the way of micro-solitons towards practical applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2203_08453 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Break the efficiency limitations of dissipative Kerr soliton using nonlinear couplers Li, Ming Xue, Xiao-Xiao Zhang, Yan-Lei Xu, Xin-Biao Dong, Chun-Hua Guo, Guang-Can Zou, Chang-Ling Optics Dissipative Kerr soliton (DKS) offers a compact solution of coherent comb sources and holds huge potential for applications, but has long been suffering from poor power conversion efficiency when driving by a continuous-wave laser. Here, a general approach to resolving this challenge is provided. By deriving the critical coupling condition of a multimode nonlinear optics system in a generalized theoretical framework, two efficiency limitations of the conventional pump method of DKS are revealed: the effective coupling rate is too small and is also power-dependent. Nonlinear couplers are proposed to sustain the DKS indirectly through nonlinear energy conversion processes, realizing a power-adaptive effective coupling rate to the DKS and matching the total dissipation rate of the system, which promises near-unity power conversion efficiencies. For instance, a conversion efficiency exceeding $90\:\%$ is predicted for aluminum nitride microrings with a nonlinear coupler utilizing second-harmonic generation. The nonlinear coupler approach for high-efficiency generation of DKS is experimentally feasible as its mechanism applies to various nonlinear processes, including Raman and Brillouin scattering, and thus paves the way of micro-solitons towards practical applications. |
| title | Break the efficiency limitations of dissipative Kerr soliton using nonlinear couplers |
| topic | Optics |
| url | https://arxiv.org/abs/2203.08453 |