PATENT CLAIM ANALYSIS

Application Number: 16050137
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["372", "018000"]

Abstract:
A technique for narrowing a linewidth of a plurality of lines of a coherent comb laser (CCL) concurrently comprises providing a mode-locked semiconductor coherent comb laser (CCL) adapted to output of at least 4 mode-locked lines; tapping a fraction of a power from the CCL from the laser cavity to form a tapped beam; propagating the tapped beam to an attenuator to produce an attenuated beam; and reinserting the attenuated beam into the laser cavity, where the reinserted beam has a power less than 10% of a power of the tapped beam. The reinsertion allows the CCL to be operated to output the mode-locked lines, each with a linewidth of less than 80% of the original linewidth. By propagating the tapped and attenuated beams on a solid waveguide, and ensuring that the secondary cavity is polarization maintaining, improved stability of the linewidth narrowing is ensured.

Claim (Index 2):
The method of  claim 1  where the provided mode-locked semiconductor CCL:\n is adapted to output at least 10 mode-locked lines; \n is adapted to output at least 4 mode-locked lines with original linewidths between 10 and 80 MHz; \n is adapted to output at least 10 mode-locked lines in an optical networking telecommunications band; \n is electrically pumped; \n is a ridge waveguide laser with edge facets forming a Fabry-Perot cavity; \n is one of: a small edge-emitting laser, an external cavity laser, a monolithic (internal-cavity) laser, a diode bar laser, a stacked diode bar laser, a surface-emitting laser (VCSEL), such as an optically pumped surface-emitting external-cavity semiconductor laser (VECSEL), or a quantum cascade laser; or \n has an active gain material comprising quantum wells, dots, dashes or rods formed of GaAs, AlGaAs, InGaAs, InAs, GaInNAs, GaN, GaP, InGaP, InP, GaInP, or a combination thereof.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 95.0
- Lexical Diversity: 2.11842
- Patent Class: 372.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13965542', '12585830', '13721930', '10448870', '13597142']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7647725391180703
- 35 USC 102 Novelty (BERT): 0.489629108363137
- Combined Prediction Score: 0.737258196042577
- Mean Citation Score: 192.061542
- Max Citation Score: 207.89111
- Similarity Product: 163.91224188565968

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

Dataset: test