US 11,892,664 B2
Stepped structure optical filter
William D. Houck, Santa Rosa, CA (US); and Steven Saxe, Santa Rosa, CA (US)
Assigned to VIAVI Solutions Inc., Chandler, AZ (US)
Filed by VIAVI Solutions Inc., San Jose, CA (US)
Filed on Mar. 17, 2021, as Appl. No. 17/249,872.
Application 17/249,872 is a continuation of application No. 16/179,480, filed on Nov. 2, 2018, granted, now 10,962,694.
Prior Publication US 2021/0199866 A1, Jul. 1, 2021
Int. Cl. G02B 5/26 (2006.01); G02B 5/08 (2006.01); H01L 27/146 (2006.01)
CPC G02B 5/26 (2013.01) [G02B 5/0816 (2013.01); H01L 27/14629 (2013.01); H01L 27/14685 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter comprising:
a stepped medium comprising:
a first pillar forming a first channel, and
a second pillar forming a second channel,
the second channel being inactive;
a mirror disposed on the stepped medium; and
a monolithic spacer disposed on at least a portion of a stepped surface of the mirror.