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A Wavelength-Scalable Dual-Stage Photonic Integrated Circuit Spectrometer

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-20-C-0571
Agency Tracking Number: N19A-023-0107
Amount: $999,848.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N19A-T023
Solicitation Number: 19.A
Solicitation Year: 2019
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-08-25
Award End Date (Contract End Date): 2022-08-31
Small Business Information
20 New England Business Center
Andover, MA 01810-1111
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Christopher Evans
 (978) 738-8159
Business Contact
 B. David Green
Phone: (978) 689-0003
Research Institution
 Georgia Tech Applied Research Corporation (GTARC)
 Timothy Gehret
505 Tenth Street NW
Atlanta, GA 30332-0415
United States

 (404) 594-0950
 Nonprofit College or University

In this program, Physical Sciences Inc. (PSI) will team with Professor Ali Adibi’s group at the Georgia Institute of Technology to develop a photonic integrated circuit (PIC) spectrometer that can simultaneously achieve high-resolution over wide-bandwidths using a scalable and foundry-ready approach. While a PIC-based spectrometer is a key component for on-chip Raman, fluorescence, and absorption spectroscopy, it is also a general purpose tool for PIC designers when available within a foundry’s process-design kit (PDK). Our approach cascades two complimentary devices: a first-stage  wide-bandwidth (>200 nm) coarse spectrometer formed using an echelle or arrayed-waveguide grating feeding a series of second-stage high-resolution (<1 nm) spectrometers consisting of arrays of high-quality-factor micro-resonators. Using a passive photonics platform with low-loss SiN waveguides and high-performance off-chip detectors enables high quantum efficiencies (>10%) that are fully compatible with low temperature operation (–40°C). Our approach is also highly adaptable and scalable in terms of center wavelength; it can be designed to operate over >200-nm bands throughout the visible and near-infrared wavelength regimes.  In Phase II of this effort, we will adapt this spectrometer to a commercial foundry, including developing a PDK, and demonstrate waveguide-enhanced Raman (WER) spectroscopy.

* Information listed above is at the time of submission. *

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