公开(公告)号：US20180128592A1

公开(公告)日：2018-05-10

申请号：US15343827

申请日：2016-11-04

Applicant: COM DEV International Ltd.

Inventor： Alan Scott ,  Hugh Podmore

IPC: G01B9/02

CPC classification number: G01B9/02044 ,  G01B9/02027 ,  G01B9/02051 ,  G01B9/02097 ,  G01J3/0218 ,  G01J3/0272 ,  G01J3/45 ,  G01J3/4531

Abstract: A spectrometer and method for determining an emitted light spectrum. An input light signal is received and directed to an array of interferometers using waveguides. A plurality of self-interfering signals are detected from a first plurality of interferometers in the array of interferometers. The first plurality of interferometers has fewer interferometers than required to satisfy the Nyquist criterion for reconstructing the emitted light spectrum. The emitted light spectrum is reconstructed from the plurality of self-interfering signals using compressive sensing. The plurality of self-interfering signals can provide an interference pattern used to reconstruct the emitted light spectrum. A second plurality of interferometers may output a second plurality of self-interfering signals to reconstruct a low resolution spectrum of the input light signal satisfying the Nyquist criterion. Low resolution signal components can be detected from the low resolution spectrum and used to pre-process the interference pattern.