Abstract

In this work, a novel wavelength selective switch is proposed and demonstrated. This new configuration avoid the use of grating and lenses, as a result, a very compact and lightweight ultra-selective wavelength switch can be obtained. For this, a novel tunable ultra-selective mirror is used. The tunability is achieved by using LC, the ultra-high Q-factor is obtained by means of dielectric metasurfaces based on hollow core nanocuboids. The metasurfaces are placed in the optical path with a specific angle. Each mirror can select any specific wavelength by applying an AC voltage. For 10°, a 44 nm of tunable range is possible. Absorption is negligible for low applied voltages. The bandwidth of the reflection resonance at 10° ranges from 0.02 nm to 0.035 nm, corresponding to a 2.5 GHz and 4.5 GHz resolution, respectively. This is far beyond the required bandwidth for future Ultra-DWDM systems.

© 2019 The Author(s)

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription