PATENT CLAIM ANALYSIS

Application Number: 16229083
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-06
Patent Classification: ["385", "014000"]

Abstract:
An optical circuit that monolithically integrates a splitter, two optical 90° hybrids, and first to fourth waveguides on a unique substrate is disclosed. The splitter splits a local beam into first and second local beams each provided to the hybrids through the third and fourth waveguides, while, the signal beam including first and second signal beams each provided to the hybrids through the first and second waveguides without intersecting with the third and fourth waveguides. The hybrids extract in-phase components and quadrature phase components of the first and second signal beams with respect to the first and second local beams, respectively. The phase statuses of the quadrature components against the in-phase components are same in the two hybrids.

Claim (Index 1):
An optical circuit that receives a signal beam and a local beam, the signal beam being modulated by a configuration of a dual-polarization quadrature phase shift keying (DP-QPSK), the signal beam and the local beam having a common wavelength \u03bb, the signal beam including a first signal beam attributed to a first polarization and a second signal beam originating to a second polarization orthogonal to the first polarization, the optical circuit comprising:\n a substrate; a splitter formed in the substrate, the splitter splitting the local beam into a first local beam and a second local beam; a first optical 90\u00b0 hybrid formed in the substrate, the first optical 90\u00b0 hybrid complementarily extracting in-phase components and quadrature components in the first signal beam, the in-phase components of the first signal beam having phases matching with phases of the first local beam, the quadrature components of the first signal beam having phases shifted by 90\u00b0 with respect to the first local beam; a second optical 90\u00b0 hybrid formed in the substrate, the second optical 90\u00b0 hybrid complementarily extracting in-phase components and quadrature components in the second signal beam, the in-phase components of the second signal beam having phases matching with phases of the second local beam, the quadrature components of the second signal beam having phases shifted by 90\u00b0 with respect to the second local beam; and first to fourth waveguides formed in the substrate, the first and second waveguides providing the first signal beam to the first optical 90\u00b0 hybrid and the second signal beam to the second optical 90\u00b0 hybrid, respectively, the third and fourth waveguides providing the first local beam to the first optical 90\u00b0 hybrid and the second local beam to the second optical 90\u00b0 hybrid, respectively, without intersecting with the first and second waveguides on the substrate, wherein the quadrature components and the in-phase components each extracted in the first optical 90\u00b0 hybrid have phase statuses identical with phase statuses between the quadrature components and the in-phase components each extracted in the second optical 90\u00b0 hybrid.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.35185
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13377774', '13379702', '13202088', '15779135', '13378034']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8181180744389408
- 35 USC 102 Novelty (BERT): 0.4812005360406323
- Combined Prediction Score: 0.78442632059911
- Mean Citation Score: 231.965014
- Max Citation Score: 238.08318
- Similarity Product: 199.8435997272563

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test