Atto-Joule/Bit High-Speed Optoelectronic Characterization System
Abstract
Atto-joule optoelectronic devices for ultra-low-energy information processing and communications are expected to become realities in the next decade. Various energy-efficient nanophotonic devices including nano-lasers, electro-optic modulators and photo detectors, have been proposed and demonstrated with preliminary experimental results. However, characterization of such energy-efficient nanophotonic devices remains a significant challenge using existing commercial equipment. The objective of this DURIP project is to build an atto-joule/bit efficiency (practically subfemto- joule/bit) high-speed optoelectronic characterization system for future energy-efficient nanophotonic devices. Particularly in this proposal, the PI will build the testing system using onchip function generator that can directly drive the nanophotonic modulator at 30 GHz bandwidth and above. The on-chip function generator will be flip-chip-bonded to the DUT. We will also optimize the design of the bonding pads to shrink the size below 25×25 square micrometers for the heterogeneous integration using state-of-the-art flip-chip bonding techniques. In this case, the parasitic capacitance from both the coaxial cable and the traditional contacting pads for RF probes will be minimized. Also we can drive the nanophotonic devices purely based on capacitive load without using transmission lines with 50? termination, which can further reduce the energy consumption. As a brief summary, the proposed DURIP proposal, if funded, will build: 1. An optoelectronic characterization system for various E-O modulators including plasmonic modulators, transparent conductive oxide (TCO) modulators, photonic crystal modulators, silicon resonators, and E-O polymer modulators 2. Achieving a large modulation bandwidth of 40GHz with modulation rate of 76 Gbps using simple OOK and 400Gbit/sec using higher order modulation scheme 3. Demonstrating heterogeneous integration of silicon-TCO nanocavity modulator
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010151
Entities
People
- Alan X. Wang
Organizations
- Air Force Office of Scientific Research
- Oregon State University
- United States Air Force