PATENT CLAIM ANALYSIS

Application Number: 16014462
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["372", "038010"]

Abstract:
A narrow linewidth laser in which an all-optical feedback line-up is used to improve the linewidth from a conventional laser source, such as a laser diode. The feedback line-up comprises an optical device having a controllable unbalanced optical coupler arranged on a cavity input path to couple a source signal from the laser source into the optical cavity, and to couple a seed signal received back from the optical cavity into the laser source. The seed signal has a lower power than the source signal. The unbalanced optical coupler may be an optical isolator arranged to couple the seed signal into the laser source at a power level selected to promote preferential stimulated emission within a narrower linewidth. By controlling the power of seed signal such that only a small portion thereof influences the lasing cavity, the narrowing effect of the preferential stimulated emission can be enhanced.

Claim (Index 1):
An optical device comprising:\n a laser source; a passive optical cavity in optical communication with the laser source along a cavity input path; and an unbalanced optical coupler on the cavity input path, wherein the unbalanced optical coupler is arranged to couple a source signal from the laser source into the optical cavity, and to couple a seed signal received back from the optical cavity into the laser source, and wherein the unbalanced optical coupler is operable to selectively control an optical power of the seed signal to be lower than an optical power of the source signal.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 2.09459
- Patent Class: 372.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12952190', '12053551', '13013790', '14295919', '15035605']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7739679295974695
- 35 USC 102 Novelty (BERT): 0.5039560302256076
- Combined Prediction Score: 0.7469667396602834
- Mean Citation Score: 208.47639000000004
- Max Citation Score: 223.60233
- Similarity Product: 158.0104299018466

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