Abstract
All-optical logics are realized on nanoscale SiC waveguides with add-drop micro-ring functionality, including the TE/TM polarized data decoding, the dual-port Kerr switching and gating beyond 12 Gbit/s. With employing the C-C bond enriched SiC thin film upon thermal oxide, the nonlinear refractive index of up to 2.44 × 10−12 cm2/W enables the asymmetric waveguide with polarization distinguishable transmission, which provides a polarization-selectivity to discreminate the TE/TM polarized data decoding with an nearly 9-dB extinction ratio. The TE/TM polarized decoding performance is comparable with a state-of-the-art fiberized in-line polarizer. The complementary transmission in the bus waveguide port facilitates the dual-port Kerr switching for data format conversion/inversion in both add/drop channels. Owing to the TE/TM polarization discriminated throughput, the asymmetric add-drop waveguide micro-ring also permits all-optical AND logic gating functions, where the ON-state outputs only if the pump bit is set at ON state and the probe bit with matched polarization. These results reveal the multi-functionality of the nanoscale SiC add-drop micro-ring waveguide for future photonic logics on chip.
Highlights
In past few years, the photonic gating functionality has received more attention to meet urgent requirement of high-speed all-optical data transmission and processing on chip in the coming era[1]
The all-optical logic gate is necessary to play a key role for ultrafast data processing in optical quantum computing and communication, which was mainly implemented with semiconductor optical amplifier (SOA) or periodically poled lithium niobate (PPLN) devices[23,24]
Two peaks at around 795 and 920 cm−1 are observed, which respectively corresponds to the transverse optical (TO) and the longitudinal optical (LO) modes of Si-C bonds
Summary
The photonic gating functionality has received more attention to meet urgent requirement of high-speed all-optical data transmission and processing on chip in the coming era[1]. An asymmetric C-C bond enriched SiC add-drop micro-ring is demonstrated to implement TE/TM polarized data decoding, wavelength conversion, format inversion and all-optical logic operations. The C-C bond enriched SiC add-drop micro-ring based Kerr switch enables the wavelength conversion at date rates of 1.2, 6 and 12 Gbit/s, owing to its transient nonlinear refractive index change with incoming data. By controlling the polarization and the on/off status of pump and probe, the output of the asymmetric add-drop micro-ring waveguide would implement the functionality of all-optical AND logic gate Such a C-C bond enriched SiC add-drop micro-ring can serve as a multi-function at data processor for photonic integrated circuit to be developed in generation
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
