PATENT CLAIM ANALYSIS

Application Number: 16018952
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["385", "031000"]

Abstract:
For multi-mode interference (MMI) couplers that have a plurality of input and output ports, e.g. 4×4, a large number of modes may be supported in the multimode region, e.g. >10, as the width of the MMI core grows larger. In order for MMI couplers to form good images, the supported modes preferably have low modal phase error, which can't be achieved using a conventional single layer design. Accordingly, a multi-mode interference (MMI) coupler comprising an MMI core comprising a plurality of waveguide core strips alternating with a plurality of cladding strips solves the aforementioned problems.

Claim (Index 21):
An optical coupler comprising:\n a first waveguide comprising a first input waveguide section extending from one side of the coupler, and a first tapering section tapering from a maximum width down to a minimum width; a second waveguide comprising a first output waveguide section extending from another side of the coupler, and a first expanding section adjacent to the first tapering section expanding from a minimum width up to a maximum width, the first expanding section expanding as the first tapering section tapers; a third waveguide comprising a second output waveguide section extending from the other side of the coupler, and a second expanding section adjacent to the first tapering section expanding from a minimum width up to a maximum width, the second expanding section expands as the first tapering section tapers; a first cladding strip between the first tapering section and the first expanding section, and a second cladding strip between the first tapering section and the second expanding section.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 94.0
- Lexical Diversity: 1.61429
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15658795', '14165554', '13254809', '13089999', '14989850']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7742137142242917
- 35 USC 102 Novelty (BERT): 0.5692593758614355
- Combined Prediction Score: 0.7537182803880061
- Mean Citation Score: 256.80162
- Max Citation Score: 456.40915
- Similarity Product: 370.3948835460306

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