Route-asymmetrical light transmission of a fiber-chip-fiber optomechanical system

Abstract

In this paper, we proposed and experimentally demonstrated a route-asymmetrical light transmission scheme based on the thermal radiative effect, which means that forward and backward propagations of an optical device have different transmittances provided they are not present simultaneously. Employing a fiber-chip-fiber optomechanical system, our scheme has successfully achieved a broad operation bandwidth of at least 24 nm and an ultra-high route-asymmetrical transmission ratio (RATR) up to 63 dB. The route-asymmetrical device has been demonstrated effectively with not only the continuous-wave (CW) light but also 10 Gbit/s on-off-keying (OOK) digital signals. Above mentioned unique features can be mostly attributed to the significant characteristics of the thermal radiative effect, which could cause a fiber displacement up to tens of microns. The powerful and significant thermal radiative effect opens up a new opportunity and method for route-asymmetrical light transmission. Moreover, this research may have important applications in all-optical systems, such as the optical limiters and ultra-low loss switches.

Keywords

route-asymmetrical light transmission / thermal radiative effect / optomechanical system / route-asymmetrical transmission ratio (RATR)

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Acknowledgements

This work was partially supported by the National Basic Research Program of China (No. 2011CB301704), the Program for New Century Excellent Talents in Ministry of Education of China (No. NCET-11-0168), a Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 201139), the National Natural Science Foundation of China (Grant Nos. 11174096 and 61475052), and the Opened Fund of the State Key Laboratory on Advanced Optical Communication System and Network (No. 2015GZKF03004).

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2016 Higher Education Press and Springer-Verlag Berlin Heidelberg