3 years ago

Ultralow-Power All-Optical Logic Data Distributor Based on Resonant Excitation Enhanced Nonlinearity by Upconversion Radiative Transfer

Ultralow-Power All-Optical Logic Data Distributor Based on Resonant Excitation Enhanced Nonlinearity by Upconversion Radiative Transfer
Chong Li, Hanfa Song, Hong Yang, Feifan Wang, Qihuang Gong, Xiaoyong Hu
An ultralow-power all-optical logic data distributor with dual address bits is realized. The device is constructed from three silicon slot ring resonators, which are side coupled to silicon slot waveguides and coated with a nonlinear nanocomposite material made of upconversion nanoparticles dispersed in an organic conjugated polymer matrix. A large nonlinearity enhancement occurs in the nanocomposite material through resonant excitation via an upconversion radiative-transfer process, which ensures an ultralow operating threshold control intensity of 10 kW cm−2. This result represents a reduction of five orders of magnitude compared with previous reports. An ultrafast response time of several picoseconds is simultaneously maintained based on structural defects inducing ultrafast decay of excited-state carriers. The intensity contrast ratio between the output logic states “1” and “0” is larger than 20 dB, which is a fivefold increase compared with previous reports. This work may pave the way for the realization of real-time multibit all-optical computing chips. An ultralow-power all-optical logic data distributor is fabricated. This device distributes an input light signal to an arbitrary output waveguide according to the two-bit address. It may serve as a component of multibit all-optical computing chips. A large nonlinearity enhancement in the nanocomposite contributes to the remarkable reduction of the operating threshold control intensity for the device.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adom.201700360

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.