US 11,996,889 B2
Optical encoder devices and systems
Brandon Walter Buckley, Walnut Creek, CA (US); David Simon Perlmutter, Oakland, CA (US); Peter Thomas Setsuda DeVore, Livermore, CA (US); Apurva Shantharaj Gowda, Mountain View, CA (US); and Jason Thomas Chou, Walnut Creek, CA (US)
Assigned to Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed by Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed on Jan. 24, 2023, as Appl. No. 18/159,054.
Application 18/159,054 is a division of application No. 17/500,777, filed on Oct. 13, 2021, granted, now 11,575,438.
Application 17/500,777 is a division of application No. 16/846,143, filed on Apr. 10, 2020, granted, now 11,184,087, issued on Nov. 23, 2021.
Claims priority of provisional application 62/884,649, filed on Aug. 8, 2019.
Prior Publication US 2023/0163850 A1, May 25, 2023
Int. Cl. H04B 10/2557 (2013.01); G02F 1/21 (2006.01); G02F 1/365 (2006.01); G02F 2/00 (2006.01); H04J 14/02 (2006.01)
CPC H04B 10/2557 (2013.01) [G02F 1/21 (2013.01); G02F 1/365 (2013.01); G02F 2/004 (2013.01); H04J 14/0221 (2013.01); G02F 1/212 (2021.01); G02F 2/006 (2021.01)] 24 Claims
OG exemplary drawing
 
1. A photonic filtered sampler, comprising:
a spectral shaper configured to receive an optical pulse train, the spectral shaper including a first diffraction grating configured to separate optical frequencies in space, a spatial light modulator configured to alter insertion loss of each optical frequency individually, and a second diffraction grating to combine the optical frequencies back together;
a dispersive element positioned to receive an output of the spectral shaper and to expand spectral contents thereof in time; and
a modulator configured to receive an output of the dispersive element and a radio frequency (RF) signal, and to produce a modulated output optical signal in accordance with the RF signal, wherein one or more characteristics of the modulated output optical signal is determined based on a spectral shape provided by the spectral shaper and dispersive properties of the dispersive element.