Cascade thermo-optical device
AssigneeJDS Uniphase Corporation
InventorHermanus Marcellinus Maria Klein Koerkamp
Life of this patent
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Abstract
The invention pertains to a thermo-optical device comprising a waveguiding structure (1) which comprises at least one input light path (2) and at least two output light paths (3,3′) forming a first y-splitter (4), at least one output light path (3,3′) being provided with primary heating elements (5,5′), characterised in that the output light paths (3,3′) are provided with an additional branch (6) forming a second y-splitter (7), wherein at least one of the branches (6,6′) is provided with a secondary heating element (8,8′). The additional branches (6) may be positioned in the opposite direction, such that in each of the second y-splitters (7) one branch (6′) coincides with one of the output light paths (3,3′) of the first y-splitter (4).
Claims23
A thermo-optical device comprising a waveguiding structure (1) which comprises at least one input light path (2) and at least two output light paths (3, 3′) forming a first y-splitter (4), at least one output light path (3, 3′) being provided with primary heating elements (5, 5′) wherein at least one of the output paths (3, 3′) is provided with an additional branch (6) forming a second y-splitter (7) and at least one of the branch (6) and the output light path (6′) is provided with a secondary heating element (8, 8′).
Dependencies are inferred from the claim text.