Dielectric Slab Waveguide Interface for Low-Loss Multiband QAM
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Solution Overview
Problem
Integrated optical waveguides are limited to transmitting electromagnetic radiation in the visible spectrum and face challenges in interacting with silicon substrates due to silicon's indirect band-gap material properties, leading to high loss in metal transmission lines at high frequencies.
Innovation Solution
An integrated chip design that includes a dielectric waveguide overlying a semiconductor substrate, coupled with metal elements to transmit electromagnetic radiation outside the visible spectrum, enabling efficient data transfer across silicon substrates using dielectric waveguides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If integrated optical waveguides are used to transmit electromagnetic radiation, then data transfer is enabled, but the bandwidth is restricted to the visible spectrum
Solution Approach 1:
The patent changes the operating frequency parameter from visible spectrum to terahertz frequency range, enabling the waveguide to transmit electromagnetic radiation at frequencies beyond traditional optical waveguides. This parameter change expands the bandwidth and frequency range adaptability of the integrated waveguide system.
2Reliability
If metal transmission lines are used for data transfer, then connectivity is provided, but loss increases at high frequencies
Solution Approach 1:
The patent replaces metal transmission lines with an integrated dielectric waveguide system that uses electromagnetic radiation confinement through dielectric materials. This substitution eliminates the high-frequency loss mechanism inherent in metal conductors while maintaining signal transmission capability, thereby improving signal integrity at high frequencies.
3Ease of operation
If integrated optical waveguides are used, then light guidance is achieved, but interaction with silicon substrates is limited
Solution Approach 1:
The patent employs composite dielectric materials with carefully engineered refractive indices that are compatible with silicon substrates. The waveguide structure uses multiple dielectric layers that can be integrated with silicon-based photonic circuits, enabling both ease of integration and broad substrate compatibility including silicon, silicon nitride, and other common photonic materials.
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 solution achieves ultra-high-speed data transfer rates exceeding 10 gigabits/s with reduced loss, overcoming the limitations of traditional integrated optical waveguides and metal transmission lines.
Implementation Method 1
Integrated optical waveguides are used to confine and guide light from a first point on an integrated chip (IC) to a second point on the IC with minimal attenuation
Data Source
AI summary
Systems and methods are provided for an integrated chip. An integrated chip includes a package substrate including a plurality of first layers and a plurality of second layers, each second layer being disposed between a respective adjacent pair of the first layers. A transceiver unit is disposed above the package substrate. A waveguide unit including a plurality of waveguides having top and bottom walls formed in the first layers of the package substrate and sidewalls formed in the second layers of the package substrate.