Book chapter “Nanophotonic devices for power-efficient communications” in Optical Fiber Telecommunications VII is available.

Prof. You-Chia Chang and Prof. Michal Lipson contribute to a book chapter in Optical Fiber Telecommunications VII, the seventh edition of the classic book series since 1979.  Now the book is available.

The book (Editor: Alan Willner):

The book chapter “Nanophotonic devices for power-efficient communications” by You-Chia Chang and Michal Lipson


Welcome our new group members!

We have 4 new master students joining our group: 林裕翔(Yu-Siang Lin), 林冠博(Guan-Bo Lin), 郭勝易(Sheng-I Kuo), 李承翰(Cheng-Han Li). Welcome!

Prof. Chang will give a talk at 台大電子所 on May 20

Scalable low-power silicon photonic platform for all-solid-state beam steering

Abstract:  Solid-state beam steering is the key to realize miniature, mass-producible LIDAR. The required huge power consumption, however, prevents this technology from further scalability. Here we show two different approaches to enable low-power beam steering. In the first approach, we use spatial-mode multiplexing to reduce the power consumption of the phase shifters in a large-scale phased array. This approach enhances the power efficiency without sacrificing optical bandwidth or operation speed. Using this approach, we demonstrate 2D beam steering with a phased array containing 512 elements. This phased array consumes only 1.9 W of power while steering over a 70°× 6° field of view. In the second approach, we achieve 2D beam steering with an optical switch array that forms switchable point emitters and a metasurface lens that collimates the emitted light. The power consumption of this approach scales logarithmically with the number of emitters and therefore favors large-scale systems.


歡迎對矽光子、超穎材料及二維材料有興趣的同學(大學部專題生、碩士生、博士生)來和張祐嘉老師聊聊。可直接 email 給張老師。