PATENT CLAIM ANALYSIS

Application Number: 15885544
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["385", "037000"]

Abstract:
In an example, an Echelle grating wavelength division multiplexing (WDM) device includes a first waveguide, a slab waveguide, multiple second waveguides, an Echelle grating, and a metal-filled trench. The first waveguide includes either an input waveguide or an output waveguide. The multiple second waveguides are optically coupled to the first waveguide through the slab waveguide. The multiple second waveguides include multiple output waveguides if the first waveguide includes the input waveguide or multiple input waveguides if the first waveguide includes the output waveguide. The Echelle grating includes multiple grating teeth formed in the slab waveguide. The metal-filled trench forms a mirror at the grating teeth to reflect incident light from the first waveguide toward the multiple second waveguides or from the multiple second waveguides toward the first waveguide.

Claim (Index 16):
A method to form a silicon (Si) photonic integrated circuit (PIC) that includes an Echelle grating demultiplexer (demux) or multiplexer (mux) in a complementary metal-oxide-semiconductor (CMOS) fabrication process, the method comprising:\n forming a Si substrate, a buried oxide (BOX) layer above the Si substrate, and a Si layer with one or more active devices above the BOX layer in a front end of line (FEOL) process of the CMOS fabrication process; and forming above the Si layer one or more dielectric and metallization layers, including a silicon nitride (SiN) layer, in a back end of line (BEOL) process of the CMOS fabrication process, including:\n forming a SiN slab waveguide in the SiN layer; \n forming an Echelle grating with multiple grating teeth in the SiN slab waveguide; \n forming a trench separating the multiple grating teeth in the SiN slab waveguide from a dielectric cladding material in the SiN layer; and \n forming a mirror in the trench.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 86.0
- Lexical Diversity: 2.87755
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15208170', '15692793', '14938807', '14938815', '15374856']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8283245149110005
- 35 USC 102 Novelty (BERT): 0.5130903830019942
- Combined Prediction Score: 0.7968011017200998
- Mean Citation Score: 280.212678
- Max Citation Score: 305.5013
- Similarity Product: 214.8122661650061

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