Integrated Magneto-Optic Switch Design for Compact Optical Routing
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Solution Overview
Problem
Conventional magneto-optic switches are bulky and costly due to their complex configuration and high component count, which complicates packaging and increases production costs, while also suffering from high optical insertion loss and poor component integration.
Innovation Solution
A compact magneto-optic switch design with integrated components, including a single fiber optical collimator, birefringent optic crystals, half wave plate assemblies, and a polarization rotation assembly with a magnetic field generating component, which reduces the size and number of components, allowing for easier packaging and lower production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional magneto-optic switch configuration is used with multiple separate components, then light path switching function is achieved, but device size becomes large and packaging becomes complex
Solution Approach 1:
The patent combines multiple separate optical components (birefringent crystal, half-wave plate, Faraday rotator, optical deflectors) into an integrated magneto-optic switch assembly. This merging of components achieves the light path switching function while significantly reducing the overall device size and simplifying packaging, directly resolving the technical contradiction between functional capability and device compactness.
2Ease of operation
If conventional magneto-optic switch with multiple components is used, then optical switching is achieved, but production cost increases
Solution Approach 1:
By integrating multiple optical components into a single magneto-optic switch assembly, the patent reduces the number of separate parts that need to be manufactured, stored, and assembled. This consolidation lowers production costs while maintaining the optical switching capability, directly addressing the contradiction between functional performance and manufacturing economy.
3Ease of operation
If conventional magneto-optic switch with multiple components is used, then light path switching is achieved, but component integration becomes difficult
Solution Approach 1:
The patent integrates the birefringent crystal, half-wave plate, Faraday rotator, and optical deflectors into a unified magneto-optic switch assembly with a consolidated magnetic field generating component. This integration simplifies the overall structure and reduces assembly complexity while maintaining the light path switching function, directly resolving the contradiction between functional capability and integration difficulty.
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
The design results in a less bulky magneto-optic switch with fewer components, simplifying packaging and improving manufacturing efficiency, while maintaining effective light path switching capabilities.
Implementation Method 1
the polarization states experience a rotation. Particularly, when linear polarized light with a fixed polarization state passes through the Faraday rotator element 16, its polarization state rotates differently depending on a direction of the magnetic field
Implementation Method 2
The birefringent optic crystal plate 17 and birefringent optic crystal light beam deflector 18 have different optical index of refraction for light beams with different polarization states. Thus, after light beams with different polarization states pass through birefringent optic crystal plate 17 and birefringent optic crystal light beam deflector 18, their directions of propagation will experience different changes
Implementation Method 3
Outside of Faraday rotator elements 16 and 19, magnetic field generating component 15 and 20 are separately positioned. by changing the direction of the current of the coil in magnetic field generating component 15, the magneto-optic switch changes the magnetic field polarity generated by the magnetic field generating component 15
Data Source
AI summary
Systems, methods, and apparatus for optical switching. In some implementations, a magneto-optic switch includes multiple optical components positioned in order along a light path including: a single fiber optical collimator, a first birefringent optic crystal, a first half wave plate assembly, a polarization rotation assembly, a second half wave plate assembly, a second birefringent optic crystal, and a dual fiber optic collimator, wherein a first side of the polarization rotation assembly near the first half wave plate assembly includes a first Faraday rotator element, a second side of the polarization rotation assembly near the second half wave plate assembly includes an optic rotation component, the polarization rotation assembly having a magnetic field generating component outside the first Faraday rotator element.