Bi-directional Optical Transceiver Module Narrow Wavelength Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bi-directional optical transceiver modules struggle to effectively separate optical signals with narrow wavelength bands, especially in environments with varying temperatures, due to the limitations of traditional optical filters.
Innovation Solution
A bi-directional optical transceiver module design that includes a holder with an optical filter and reflector, where the first optical filter is inclined at a smaller angle than the reflector, allowing for improved separation of optical signals by adjusting the angles between the optical axis, filter, and reflector, and optimizing the thickness of the filter to enhance signal separation and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional optical filter inclined at 45° is used to separate optical signals, then the structure is simple and manufacturing is easy, but the signals cannot be effectively separated when the wavelength interval is 60 nm or lower, particularly in temperature environments from −40°C to 85°C
Solution Approach 1:
The patent changes the inclination angle parameter of the optical filter from the traditional 45° to a smaller angle (e.g., 10°-30°), and optimizes the thickness parameter of the filter (0.5-1.2 mm). These parameter modifications enable effective signal separation even when the wavelength interval is 60 nm or lower, while maintaining manufacturing feasibility through standardized angle ranges and thickness specifications.
2Manufacturing precision
If the optical filter thickness is increased to improve signal separation, then the separation effectiveness improves, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent optimizes the filter thickness parameter to a specific range (0.5-1.2 mm) that achieves effective signal separation without excessive thickness. This optimized parameter range balances performance requirements with manufacturing capabilities, avoiding the need for ultra-precision thickness control while still achieving the desired signal separation effect.
3Ease of operation
If the optical filter is inclined at a larger angle to simplify the holder design, then the assembly is easier, but the separation of narrow wavelength band signals deteriorates
Solution Approach 1:
The patent modifies the inclination angle parameter to a smaller range (10°-30° instead of 45°), which requires more precise holder design and assembly but achieves superior signal separation performance. The patent compensates for the increased assembly precision requirement by providing specific angle specifications and tolerance ranges that guide manufacturing and assembly processes.
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 effectively separates optical signals with narrow wavelength bands, reduces manufacturing costs, and simplifies the assembly process, while maintaining reliable signal separation even in challenging temperature environments.
Implementation Method 1
a first optical filter configured to reflect the first optical signal, and allow the second optical signal to pass through
Implementation Method 2
a first optical filter configured to reflect the first optical signal, and allow the second optical signal to pass through
Implementation Method 3
a reflector configured to reflect the first optical signal reflected by the first optical filter to the optical receiver side
Data Source
AI summary
Disclosed is a bi-directional optical transceiver module, which is capable of effectively separating optical signals even when wavelength bands of a first optical signal output from an optical fiber and a second optical signal output from an optical transmitter are narrow.