CLEO/Europe-EQEC 2017 Shun Fujii

I presented a review of my research at the KEIO-TUM Joint Seminar held at the Technical University of Munich, and it was good to have some discussions with members of the group working on micro optical resonators at the poster room of CLEO Europe. In the Joint Seminar, I listened to a series of presentations on spintronics, but it was difficult for me to understand them due to lack of prerequisite knowledge if I am not a specialist. It may be necessary to learn various fields widely and shallowly when participating in domestic conferences such as the Japan Society of Applied Physics. In many cases, the contents of presentations by well-known groups have already been published or are available on arXiv, so you can check the details of any presentation that interests you immediately. It was clear from the presentations that microcomputers are superior in terms of integration and cost, but inferior in terms of stability and controllability compared to conventional optical comb light sources, and that researchers in this field are aware of this as a common problem. In particular, T. Herr mentioned four points as "Soliton challenge": Stable, Deterministic (number of soliton), Controllable (repetition rate The "soliton challenge" is expressed in the four points: Stable, Deterministic (number of solitons), Controllable (repetition rate), and Efficient. Against this backdrop, there have been several publications such as an innovative method to overcome these problems by using optical pulses as excitation light (T. Herr, EF-3.4), a method to control the number of solitons (H. Guo, EF3.2), and a study on the stabilization of dark solitons, which are considered to be relatively efficient (A. Fullop. CD-P.45), CD-P.45). On the other hand, I had the impression that some of the more theoretical groups were conducting slightly fanatical research on super cavity solitons (M. Erkintalo, EF-1.5) and breathing solitons (E. Lucas, EF-3.1). I also saw some research started by young researchers (P. Del'Haye, T. Herr, etc.), who can be regarded as the first generation of microcomputer researchers, at their new affiliated institutions. It is necessary to check their activities in addition to those of Vahala, Kippenberg, Lipson & Gaeta, and others.