Comb optical interference filter

Details Comb optical interference filter Comb optical interference filter

1992-09-30

1993-07-06

Lerner, Martin

Optical: systems and elements

Light interference

Electrically or mechanically variable

356352, 359579, 359580, G02B 528, G02F 101, G01B 902

Patent

active

052259307

ABSTRACT:
High total transmission, tunable comb filter structures are described which comprise moderately thick layers of optical material having periodic or multiply periodic refractive index modulation features comprising a multiplicity of coherently-coupled, weakly-resonant optical cavities, resulting in and characterized by spectra of high order (5 or higher) relative to a fundamental (lowest order) cavity resonance, consisting of narrow, moderate to high density reflection lines occurring in one or more sets, each set being characterized by lines equally spaced by wave number if optical dispersion is neglected. Filters of the inversion can be structured to be tuned, electro-opti

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