PATENT CLAIM ANALYSIS

Application Number: 15994971
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["372", "045010"]

Abstract:
An edge-emitting laser having a small vertical emitting angle includes an upper cladding layer, a lower cladding layer and an active region layer sandwiched between the upper and lower cladding layers. By embedding a passive waveguide layer within the lower cladding to layer, an extended lower cladding layer is formed between the passive waveguide layer and the active region layer. In addition, the refractive index (referred as n-value) of the passive waveguide layer is larger than the n-value of the extended lower cladding layer. The passive waveguide layer with a larger n-value would guide the light field to extend downward. The extended lower cladding layer can separate the passive waveguide layer and the active region layer and thus expand the near-field distribution of laser light field in the resonant cavity, so as to obtain a smaller vertical emitting angle in the far-field laser light field.

Claim (Index 11):
An edge-emitting laser having a small vertical emitting angle, comprising:\n an InP substrate; a passive waveguide layer, located above the substrate; an extended bottom cladding layer, located on the passive waveguide layer, said extended bottom cladding layer being made of InP; an active region layer, located on the extended bottom cladding layer; a top cladding layer, located on the active region layer, said top cladding layer being made of InP; and a contact layer, located on the top cladding layer; wherein a light refraction index of the passive waveguide layer is larger than that of the extended bottom cladding layer.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 93.0
- Lexical Diversity: 2.36364
- Patent Class: 372.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15624934', '10553161', '10692125', '15384270', '11262536']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7792144267346458
- 35 USC 102 Novelty (BERT): 0.6106381096042378
- Combined Prediction Score: 0.762356795021605
- Mean Citation Score: 307.281806
- Max Citation Score: 538.1315
- Similarity Product: 472.428212221682

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