The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Sep. 14, 2022
The Trustees of the Stevens Institute of Technology, Hoboken, NJ (US);
Yuping Huang, Norwood, NJ (US);
Yong Meng Sua, Fort Lee, NJ (US);
Jiuyi Zhang, Palisades Park, NJ (US);
Jiayang Chen, Jersey City, NJ (US);
Jeevanandha Ramanathan, Jersey City, NJ (US);
The Trustees of the Stevens Institute of Technology, Hoboken, NJ (US);
Abstract
A spectroscope using single-photon counters and a chip-integrated lithium niobate micro-ring filter to measure the atmospheric CO2 absorption spectrum passively is disclosed. By thermo-optically sweeping the filter over 150 pm and referencing the resulting photon counts to a bypass channel, the absorption spectrum can be sampled at an ultrahigh-resolution of 6 pm. The spectroscope can be a part of a ground-based field system, wherein the CO2 absorption through the atmosphere can be characterized by counting the solar photons across the absorption line around 1572.02 nm, which agrees well with its transmission spectrum at standard atmospheric pressure.