Abstract
In this paper, a kind of integrated flexible-grid wavelength-selective switch composed of reconfigurable add-drop silicon microring resonators with interferometric couplers is described in detail. Owing to tunable interferometric couplers, the proposed device is capable of realizing an increase in adjustable channel spacing for a given field coupling coefficient. By carefully controlling the path phase differences and tunable interferometric couplers, the transmission spectra of adjacent channels can be selectively combined to form adjustable bandwidths as desired. As an example, an integrated flexible-grid 1 × 2 wavelength-selective switch is designed and theoretically analyzed. The channel spacing can increase from 0.1 to 0.8 nm. When the channel spacing is selected to be 0.8 nm, the bandwidth varies from 0.36 to 2.91 nm and a minimum extinction ratio of 14.8 dB is obtained.
© 2018 IEEE
PDF Article
More Like This
Experimental demonstration of a flexible-grid 1×2 wavelength-selective switch based on silicon microring resonators
Weiwei Chen, Hao Lu, Shiqi Li, Pengjun Wang, Shixun Dai, Tianjun Yang, Bohao Zhang, Ruolan Yu, Qiang Fu, Jun Li, Yan Li, Tingge Dai, Yuehai Wang, and Jianyi Yang
Opt. Lett. 44(2) 403-406 (2019)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription