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Optical Frequency Comb Generation Using Controllable Mode Interaction

总结: Researchers at Purdue University have developed a novel method to control the dynamics of comb generation. This new method can be used to achieve broadband mode locking, repetition rate tuning, and tailoring the spectrum shape of the frequency comb. In addition, this method can be applied to microresonators with either anomalous or normal dispersion and is especially useful when the microresonator has normal dispersion. Given normal dispersion is easy to access by most currently available nonlinear materials, the proposed method is important to real applications.

技术优势: Tailor the spectrum shape of the frequency combBroadband mode locking and repetition rate tunable microresonator comb Microcomb generation in the normal dispersion regime

*Background: Microresonator frequency combs (Kerr combs) are very attractive due to their compactness, ultrabroad bandwidth, and high repetition rate. Many applications can benefit from this revolutionary technique such as optical fiber communications, photonic radiofrequency filters, and optical clocks. Anomalous dispersion microresonators are preferred for comb generation because it is easy to get modulational instability in the anomalous dispersion regime, which is required for frequency combs growing up from just low-level noise. However, since most currently available nonlinear materials have normal dispersion, special efforts are required to get the overall dispersion anomalous by tailoring the microresonator geometry.

*Web Links: Purdue Office of Technology CommercializationPurdueInnovation and EntrepreneurshipAndrew WeinerPurdue Electrical and Computer Engineering

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