PATENT CLAIM ANALYSIS

Application Number: 15964701
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["385", "014000"]

Abstract:
The application discloses a polymer-based optical splitter on a silicon surface. A trench is formed on the silicon surface and a polymer waveguide having three 45 degree reflectors is patterned in the trench. The trench has two slanted side walls opposite to each other. Two reflectors of the polymer waveguide are arranged on the two slanted side walls. An intrusion structure with a slanted front wall is located in the middle of the waveguide and the third reflector is formed on the slanted front wall. The first reflector receives an optical input source, the second reflector is aligned to return light to the end optical receiver. The third reflector functions as a light splitter and is aligned to an intermediate optical receiver. Light splitting ratio is determined by the third reflector size relative to the waveguide cross section near the third reflector. A fabrication method is disclosed thereof.

Claim (Index 14):
A method of fabricating an optical splitter module, comprising:\n providing a substrate having an insulating layer on a top surface; forming a trench having an intrusion structure in the middle of the trench; patterning a first and a second slanted side walls of the trench, wherein the first and second slanted sidewalls are opposite to each other; patterning a slanted front surface of the intrusion structure facing the first slanted side wall; forming a polymer waveguide in the trench, comprising:\n depositing a first polymer cladding layer in the trench covering the first and second slanted side walls, and the slanted front wall of the intrusion structure; \n depositing a polymer core layer on the first polymer cladding layer; \n patterning the polymer core layer between the first and second slanted side walls to form a first, a second reflectors respectively, and patterning the intrusion structure to form a third reflector, wherein the intrusion structure partially blocks the polymer waveguide; and \n covering the patterned polymer core layer with a second polymer cladding layer, leaving one opening above each of the first, the second, and the third reflectors; \n patterning conductive lines in the insulating layer outside the trench; growing solder bumps with Au/Ni coatings on conductive lines for flip chip mounting with bond pads; and assembling a light source device to align to the first reflector, a first receiver to align to the third reflector of the intrusion structure, and a second receiver to align to the second reflector.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 91.0
- Lexical Diversity: 2.02564
- Patent Class: 385.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15963815', '15963030', '15963780', '15963014', '15963665']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8469624968930727
- 35 USC 102 Novelty (BERT): 0.5277623798828528
- Combined Prediction Score: 0.8150424851920507
- Mean Citation Score: 316.41698
- Max Citation Score: 364.6441
- Similarity Product: 330.2819708169698

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