US 12,217,885 B2
Method of precision beam collimation using fiber-optic circulator and wavelength tunable source
Nam-Hyong Kim, San Jose, CA (US); Andrei Kazmierski, Pleasanton, CA (US); and Paul Epp, Sunnyvale, CA (US)
Assigned to X Development LLC, Mountain View, CA (US)
Filed by X DEVELOPMENT LLC, Mountain View, CA (US)
Filed on Jul. 10, 2023, as Appl. No. 18/219,853.
Application 18/219,853 is a continuation of application No. 17/697,581, filed on Mar. 17, 2022, granted, now 11,747,578.
Application 17/697,581 is a continuation of application No. 16/994,927, filed on Aug. 17, 2020, granted, now 11,307,367, issued on Apr. 19, 2022.
Prior Publication US 2023/0350139 A1, Nov. 2, 2023
Int. Cl. H04B 10/00 (2013.01); C01G 39/00 (2006.01); C01G 55/00 (2006.01); G02B 6/42 (2006.01); H01B 1/22 (2006.01); H01B 1/24 (2006.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01); G02B 27/30 (2006.01); H01M 4/02 (2006.01)
CPC H01B 1/22 (2013.01) [C01G 39/00 (2013.01); C01G 45/1228 (2013.01); C01G 45/1242 (2013.01); C01G 51/42 (2013.01); C01G 51/50 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); C01G 55/00 (2013.01); G02B 6/4221 (2013.01); G02B 6/4225 (2013.01); H01B 1/24 (2013.01); H01M 4/131 (2013.01); H01M 4/364 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 10/052 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); G02B 27/30 (2013.01); H01M 4/02 (2013.01); H01M 2004/021 (2013.01); H01M 4/625 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of calibrating a collimating lens system, the method comprising:
receiving, via a collimating lens, a beam at a power meter connected to an optical fiber;
varying, using one or more processors, a wavelength of the beam produced by an optical transmitter across a set of wavelengths while tracking a power reading at each wavelength using the power meter;
determining, using the one or more processors, a particular wavelength of the set of wavelengths that corresponds to a highest power reading based on the tracking of the power reading at each wavelength using the power meter;
determining, using the one or more processors, a distance adjustment for the optical fiber based on a difference of a focal length of the particular wavelength and a focal length of a desired wavelength for the collimating lens system; and
actuating, using the one or more processors, a motor configured to move a tip of the optical fiber based on the determined distance adjustment.