PATENT CLAIM ANALYSIS

Application Number: 15945064
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["385", "043000"]

Abstract:
A waveguide structure for optical coupling is provided. The waveguide structure includes a first waveguide embedded in a cladding of a lower refractive index than the first waveguide, a second waveguide of a higher refractive index than the cladding, and an intermediate waveguide. The first waveguide and the second waveguide are physically arranged at the same side of the intermediate waveguide to establish an optical coupling between the first waveguide and the second waveguide through the intermediate waveguide. The first waveguide material has a refractive index value smaller than or equal to 3.

Claim (Index 11):
A method for fabricating a waveguide structure for optical coupling, comprising:\n forming a silicon-on-insulator wafer substrate; forming an intermediate waveguide within a thin silicon layer of the silicon-on-insulator wafer substrate; covering the intermediate waveguide with a cladding and planarizing the cladding; forming a first waveguide on top of the planarized cladding, wherein the cladding comprises a lower refractive index than the first waveguide material; annealing the formed first waveguide before and/or after patterning of the first waveguide; applying an overcladding material for embedding the first waveguide; locally removing the overcladding material to a thickness less than 200 nm above the intermediate waveguide; and forming a second waveguide in an area where the overcladding material is removed, wherein the second waveguide comprises a higher refractive index than the overcladding.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 91.0
- Lexical Diversity: 2.2
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15147611', '15438820', '15208170', '14635602', '15281366']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8154773934879954
- 35 USC 102 Novelty (BERT): 0.5160933537264792
- Combined Prediction Score: 0.7855389895118438
- Mean Citation Score: 247.29481600000005
- Max Citation Score: 315.21194
- Similarity Product: 224.44026165958888

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test