Rotatable Compensator for Optical Path Length Adjustment
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Solution Overview
Problem
Optical communication systems face challenges in achieving central wavelength uniformity between multiple components of a light beam, which is crucial for better polarization mode dispersion and chromatic dispersion performance, due to difficulties in finding materials with desired qualities and the time-consuming screening process.
Innovation Solution
An optical cell design that includes rotatable compensators in the optical path, allowing adjustment of optical path lengths by varying the distance the light beam travels through the compensators, thereby changing the central wavelengths of the components and improving uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If materials with certain qualities are selected to split the light beam and manipulate the multiple components, then central wavelength uniformity is improved, but the screening process becomes time-consuming and difficult
Solution Approach 1:
The patent changes the parameter of optical path length by introducing a compensator that can be rotated to vary the distance light travels through the optical path. This allows adjustment of the optical path length to achieve central wavelength uniformity without requiring extensive material screening, thereby reducing the time-consuming aspect while maintaining manufacturing precision
Solution Approach 2:
The compensator is designed to be rotatable, making the optical path length dynamically adjustable. This dynamic adjustment capability allows the system to achieve and maintain central wavelength uniformity without being constrained by fixed material properties, eliminating the need for time-consuming material screening processes
2Manufacturing precision
If the optical path length is adjusted to change central wavelengths, then wavelength uniformity is improved, but the device complexity increases due to additional compensator components
Solution Approach 1:
The compensator serves multiple functions: it adjusts the optical path length, compensates for wavelength variations, and maintains central wavelength uniformity across multiple components. By making this single component multi-functional, the patent avoids adding multiple separate devices, thereby improving manufacturing precision while limiting the increase in device 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 central wavelength uniformity, reduces polarization mode dispersion and chromatic dispersion, and lowers manufacturing costs by simplifying the screening process for optical elements.
Implementation Method 1
Rotating the compensator about the axis may vary a distance that the optical path passes through the compensator thereby changing the optical path length of the optical path
Data Source
AI summary
An optical cell may include a first port coupled to a second port by an optical path. The optical cell may also include a compensator disposed in the optical path. The compensator may be rotatable about an axis. Rotating the compensator about the axis may vary a distance that the optical path passes through the compensator thereby changing the optical path length of the optical path.