Remote control of light behavior by transformation optical devices

• Published in: Optics express Vol. 18; no. 3; pp. 2049 - 2055
• Main Authors: Liang, Zixian, Lin, Xulin, Jiang, Xunya
• Format: Journal Article
• Language: English
• Published: United States 01.02.2010
• ISSN: 1094-4087; 1094-4087
• DOI: 10.1364/OE.18.002049

Based on the transformation optics, a general method of light-behavior remote control is proposed. From this method, the important coefficients of a cavity, i.e. the quality factor Q and the resonant frequency ?0 could be tuned in a wide range by a transformation optical device in distance, so that the light behavior can be remotely controlled. To confirm this original idea, three schemes, such as, the remote modification of output energy current from an absorptive cavity, the remote control of lasing behaviors, and the remote tuning of the resonant frequency or photonic band-gap, are presented and confirmed by our numerical simulations based on finite-difference time-domain and finite-element methods. With some special advantages, e.g., without physical change or damage of original devices, large tuning range, and easily to hide the controller, this method could be widely used in optical/photonic or electromagnetic designs in the future.