Optical in line filters

Details Optical in line filters Optical in line filters

1989-02-23

1990-08-28

Lee, John D.

350 9612, G02B 626

Patent

active

049520180

ABSTRACT:
An optical in-line filter comprises a first waveguide whose output end is coupled to a second, narrower waveguide such that light from the first waveguide of a predetermined waveband or wavebands only is passed to the second waveguide light of other wavebands emerging elsewhere from the open end of the first waveguide.

REFERENCES:
patent: 3920314 (1975-11-01), Yajima
patent: 4201447 (1980-05-01), Thompson et al.
patent: 4674827 (1987-06-01), Izutsu et al.
patent: 4701009 (1987-10-01), Tangonan et al.
patent: 4820009 (1989-04-01), Thaniyavarn
patent: 4842367 (1989-06-01), Djupsjobacka

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