PATENT CLAIM ANALYSIS

Application Number: 15922123
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["385", "001000"]

Abstract:
Embodiments of the invention describe systems, apparatuses and methods for providing athermicity and a tunable spectral response for optical filters. Finite impulse response (FIR) filters are commonly implemented in photonic integrated circuits (PICs) to make devices such as wavelength division multiplexing (WDM) devices, asymmetric Mach-Zehnder interferometers (AMZIs) and array waveguide gratings (AWGs). Athermicity of an FIR filter describes maintaining a consistent frequency transmission spectrum as the ambient temperature changes. A tunable spectral response for an FIR filter describes changing the spectrum of an FIR filter based on its application, as well as potentially correcting for fabrication deviations from the design. In addition, embodiments of the invention reduce energy dissipation requirements and control complexity compared to prior art solutions.

Claim (Index 2):
A tunable optical filter, comprising:\n a first waveguide including a first waveguide section and a second waveguide section, the second waveguide section having a higher temperature coefficient of refractive index than the first waveguide section; a second waveguide; an input coupler to split incident light into the first and second waveguides; an output coupler to interfere light from the first and second waveguides to produce interfered light; a heater to heat at least a portion of the second waveguide section; and a temperature controller to control the heater to tune a frequency spectrum of the interfered light.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 1.55682
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13751492', '15612364', '14929603', '14537575', '15853422']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8003044497489554
- 35 USC 102 Novelty (BERT): 0.4966709463967119
- Combined Prediction Score: 0.7699410994137311
- Mean Citation Score: 246.07698800000003
- Max Citation Score: 311.4513
- Similarity Product: 268.33466486629845

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