Stabilizing Brace for Non-Rectilinear Optical Integrated Circuit

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Non-rectilinearly shaped optical integrated circuits (OICs) exhibit significant center wavelength shift due to temperature variations, thermal stress, and other forms of stress, which affects their performance in optical communication systems.

Innovation Solution

The implementation of a stabilizing brace and a relief structure in the riser provides thermal contact and stabilization, minimizing center wavelength shift by preventing temperature-induced motion and promoting uniform temperature distribution across the OIC.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If non-rectilinearly shaped OICs are used for optical communication, then device functionality and optical signal transmission are achieved, but center wavelength shift occurs due to temperature variations and thermal stress

Engineering Contradiction:
Improvedevice functionalityVSAvoidcenter wavelength stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent changes the physical parameters of the mounting structure by introducing a stabilizing brace and relief structure that modify the thermal expansion characteristics. The brace is positioned at specific locations and oriented at particular angles to counteract thermal stress-induced wavelength shifts, transforming the system's thermal response parameters to maintain wavelength stability across temperature variations.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs a composite structural approach by combining the OIC device with a stabilizing brace made of materials having different thermal expansion properties. This composite mounting structure integrates the functional OIC with the stabilizing element to create a system that resists thermal deformation, thereby maintaining center wavelength stability despite temperature changes.

Inventive Principle:
Principle #40Composite materials

2Reliability

If stabilizing brace and relief structure are added to mitigate temperature sensitivity, then center wavelength stability is improved, but device complexity increases

Engineering Contradiction:
Improvecenter wavelength stabilityVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the mounting structure into distinct functional components: the stabilizing brace and the relief structure. This segmentation allows each component to perform its specific function independently - the brace provides structural stabilization while the relief structure manages thermal stress - thereby achieving wavelength stability without requiring a completely redesigned complex mounting system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The stabilizing brace acts as an intermediary element between the OIC device and the mounting substrate. It mediates the thermal stress and mechanical forces, transferring and distributing them in a controlled manner to prevent direct transmission of temperature-induced deformation to the OIC, thus maintaining wavelength stability while adding minimal structural complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution effectively reduces center wavelength shift, enhancing the temperature stability and performance of non-rectilinearly shaped OICs, achieving minimal sensitivity to temperature changes and maintaining consistent optical signal transmission.

Implementation Method 1

a relief structure in the riser provides thermal contact between the riser and a stabilizing brace in addition to contact between an OIC and other portions of the riser

Methodology Applied
Scientific EffectThermal contact: Conduction (thermal)

Data Source

PatentUS7447394B2Stable center wavelength performance in non-rectilinearly shaped optical integrated circuit chip
Publication Date: 2008.11.04 WELLS FARGO BANK NA
  • US7447394B2 patent drawing
  • US7447394B2 patent drawing
  • US7447394B2 patent drawing

AI summary

An optical device with a non-rectilinearly shaped optical integrated circuit over a substantially flat portion of a riser, the riser also equipped with a relief structure that is in thermal contact with a stabilizing brace that is in turn connected to two portions of the non-rectilinearly shaped optical integrated circuit. The non-rectilinearly shaped optical integrated circuit exhibits reduced center wavelength drift.