PATENT CLAIM ANALYSIS

Application Number: 16008317
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["385", "048000"]

Abstract:
A photonic integrated circuit including a beam launching waveguide, a local oscillator waveguide, a target interferometer, and a reference interferometer all integrated on a chip. The beam launching waveguide transmits target electromagnetic radiation off the chip and receives a retroreflection of the target electromagnetic radiation from a target off the chip. The target interferometer interferes the retroreflection with a local oscillator field transmitted from the local oscillator waveguide so as to form a target interference signal. The reference interferometer interferes a portion of the target electromagnetic radiation that does not leave the chip with the local oscillator field transmitted from the local oscillator waveguide to form a reference interference signal. The difference between the reference interference signal and the target interference signal is used to measure a distance to the target from the chip.

Claim (Index 1):
A photonic integrated circuit, comprising:\n a first coupler; a beam launching waveguide coupled to the first coupler; a target interferometer including a target waveguide, a first local oscillator (LO) waveguide, and a second coupler coupling the target waveguide and the first LO waveguide; a reference interferometer including a reference waveguide, a second local oscillator (LO) waveguide, and a third coupler coupling the reference waveguide and the second LO waveguide; and a fourth coupler coupled to the second LO waveguide and the first LO waveguide; wherein:\n the first coupler splits electromagnetic radiation into target electromagnetic radiation transmitted to the beam launching waveguide and reference electromagnetic radiation transmitted to the reference waveguide; \n the fourth coupler splits LO electromagnetic radiation into first LO electromagnetic radiation transmitted to the first LO waveguide and second LO electromagnetic radiation transmitted to the second LO waveguide; \n the beam launching waveguide transmits the target electromagnetic radiation off the circuit, receives retroreflected electromagnetic radiation comprising a retroreflection of the target electromagnetic radiation from a target off the circuit, and transmits the retroreflected electromagnetic radiation to the target waveguide; \n the target waveguide transmits a retroreflected field of the retroreflected electromagnetic radiation to the second coupler and the first LO waveguide transmits an LO field of the first LO electromagnetic radiation to the second coupler, the retroreflected field interfering with an LO field in the second coupler so as to form a target interference signal; \n the reference waveguide transmits a reference field of the reference electromagnetic radiation to the third coupler and the second LO waveguide transmits an LO field of the second LO electromagnetic radiation to the third coupler, the reference field interfering with the LO field in the third coupler so as to form reference interference signal; and a difference between the reference interference signal and the target interference signal is used to determine a distance to the target relative to the photonic integrated circuit.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 94.0
- Lexical Diversity: 2.78431
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12480956', '13409343', '13034923', '13409556', '14771631']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.808181896844735
- 35 USC 102 Novelty (BERT): 0.482139431295262
- Combined Prediction Score: 0.7755776502897876
- Mean Citation Score: 205.102104
- Max Citation Score: 223.2705
- Similarity Product: 175.63710999190806

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

Dataset: test