Optical waveguides – With optical coupler – Input/output coupler
Patent
1993-08-25
1995-05-16
Healy, Brian
Optical waveguides
With optical coupler
Input/output coupler
385 14, 385 27, 385 41, 385 42, 385131, G02B 634
Patent
active
054168660
ABSTRACT:
A tunable optical filter device has a wavelength selective optical filter that includes a grating structure arranged in a waveguide structure. The grating structure is formed so that it comprises two controllable grating sections electrically isolated from each other and which have different grating periods.
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Patent Abstract of Japan vol. 14, No. 136 (P-102), abstract of JP 2-004209, publ. 9th Jan. 1990.
Healy Brian
Telefonaktiebolaget L M Ericsson
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