PATENT CLAIM ANALYSIS

Application Number: 15871709
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["356", "461000"]

Abstract:
Bias error in a resonant fiber optic gyroscope (RFOG) is diminished by reducing polarization mismatch between a polarization Eigenstate of optical signals propagating inside of a resonator of the RFOG and the polarization of optical signals being injected into the resonator of the RFOG. The polarization mismatch is reduced by filtering the optical signals circulating in the resonator and the optical signals injected into the resonator with common polarizers.

Claim (Index 15):
A gyroscope, comprising:\n an optical resonator coil having a first port and a second port; a first photodetector; a second photodetector; a third photodetector; a coherent light source system coupled to the first photodetector, the second photodetector, and the third photodetector, and configured to generate a first optical signal and a second optical signal; a processing system, coupled to the coherent light source system, configured to determine angular rotation of an optical resonator comprising the optical resonator coil; an optical processing system coupled to the first port, the second port, the first photodetector, the second photodetector, the third photodetector, and configured to receive the first optical signal and the second optical signal; and wherein the optical processing system comprises:\n a first common polarizer configured to polarize a first optical signal; \n a first reflector configured to reflect the polarized first optical signal; \n a first beam splitter configured to split the reflected, polarized first optical signal into a first portion and a second portion; \n a second common polarizer configured to polarize a second optical signal; \n a second reflector configured to reflect the polarized second optical signal; \n a second beam splitter configured to split the reflected, polarized second optical signal into a first portion and a second portion; \n wherein the first beam splitter is configured to optically couple the second portion, of the reflected, polarized first optical signal, to the first photodetector; \n wherein the first port is configured to receive the first portion of the reflected, polarized first optical signal; \n wherein the second port is configured to receive the first portion of the reflected, polarized second optical signal; \n wherein the first common polarizer is configured to polarize a third optical signal circulating in a first direction in the optical resonator coil; and \n wherein the second common polarizer is configured to polarize a fourth optical signal circulating in a second direction in the optical resonator coil.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 86.0
- Lexical Diversity: 1.92105
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15668676', '10811748', '10166697', '12466140', '15490758']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7303973080620699
- 35 USC 102 Novelty (BERT): 0.4811810901819603
- Combined Prediction Score: 0.705475686274059
- Mean Citation Score: 227.49027400000003
- Max Citation Score: 239.44806
- Similarity Product: 201.3833162833357

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