Optical Module With Inclined Fiber End-Face
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Solution Overview
Problem
Existing optical modules face challenges in achieving high-speed, long-distance, and low-cost information transmission due to limitations in optical signal conversion and power loss reduction.
Innovation Solution
The optical module design includes a circuit board with an optical chip, a lens assembly with a first and second lens, a reflective surface, and an optical fiber holder with an inclined fiber end-face, which optimizes the optical signal path and reduces interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional optical module design is used, then the structure is simple, but the transmission rate is limited and power loss is high
Solution Approach 1:
The optical module is divided into multiple functional components: optical chip, first lens assembly, second lens assembly, reflective surface, and optical fiber holder. Each component performs a specific function in the optical signal transmission path, allowing optimization of each segment to reduce overall power loss and increase transmission rate.
Solution Approach 2:
The first lens and second lens act as intermediaries to focus and direct optical signals from the optical chip to the optical fiber. The reflective surface serves as an intermediary to redirect light paths, ensuring efficient signal coupling and reducing power loss during transmission.
2Reliability
If the fiber end-face is made as an inclined surface, then interference is reduced, but manufacturing complexity increases
Solution Approach 1:
The fiber end-face is designed with an asymmetric inclined surface rather than a symmetric flat surface. This asymmetric geometry effectively redirects reflected light away from the optical chip, reducing interference. The inclination angle is optimized to balance interference reduction with manufacturability.
3Productivity
If multiple lenses and reflective surfaces are added, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The first lens assembly, second lens assembly, and reflective surface are integrated into a compact configuration where components work together in a unified optical path. This merging approach achieves high transmission efficiency while minimizing the overall space and complexity of the device structure.
Solution Approach 2:
The optical components are arranged in a three-dimensional configuration that optimizes light paths through spatial dimensionality. The reflective surface is positioned at an angle to create efficient light redirection in multiple dimensions, achieving high transmission efficiency without proportionally increasing structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the transmission rate and reduces power loss, enabling efficient high-speed and long-distance optical communication while minimizing costs.
Implementation Method 1
an inner surface of the lens assembly that faces towards the optical chip is provided with a first lens
Implementation Method 2
an outer surface of the lens assembly that faces away from the circuit board is provided with a reflective surface
Implementation Method 3
a second lens is disposed in the wrapping cavity
Implementation Method 4
both a first end face of the optical fiber holder and the fiber end-face are inclined surfaces
Data Source
AI summary
This disclosure provides an optical module including a lens assembly and an optical fiber holder. One end of the lens assembly is provided with a wrapping cavity, in which a second lens is disposed. An optical fiber is inserted in the optical fiber holder, with a gap formed between a fiber end-face of the optical fiber and the second lens. The fiber end-face of the optical fiber and a first end face of the optical fiber holder are inclined surfaces. The wrapping cavity includes a stop protrusion. A surface of the stop protrusion facing towards the optical fiber holder is an inclined stop surface, which is in contact with the first end face. The stop surface and the first end face of the optical fiber holder are inclined surfaces, achieving connection between the optical fiber holder and the lens assembly along a length direction of the lens assembly.