Optical Transmission Module Thermal Management
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Solution Overview
Problem
Optical transmission modules face challenges in maintaining stable operation across a wide temperature range without excessive power consumption or high costs, as the temperature dependencies of semiconductor lasers' resonator and reflecting mirror characteristics lead to deteriorated performance at both low and high temperatures.
Innovation Solution
An optical transmission module with a heat transfer member connecting the light source element and driver circuit, allowing heat transfer between them, and a switch unit to adjust contact and separation based on temperature, ensuring the light source element operates at an optimal temperature without additional power or expensive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Peltier device or heater is provided to maintain constant temperature, then the light source element can operate stably, but electric power consumption increases and module cost increases
Solution Approach 1:
The invention converts the harmful heat generated by the driver circuit into a beneficial resource by using it to warm the light source element during low-temperature operation. The heat transfer member conducts this waste heat to the light source element, eliminating the need for additional heating power while maintaining stable operation.
Solution Approach 2:
The driver circuit serves a dual function: driving the light source element and providing thermal management through heat transfer. The heat generated during driver circuit operation is automatically utilized to maintain the light source element at optimal temperature, making the system self-regulating without external control.
2Reliability
If a Peltier device or heater is provided to maintain constant temperature, then the light source element can operate stably, but module size increases and manufacturing cost increases
Solution Approach 1:
The invention merges the driver circuit and light source element into a integrated thermal management system. The heat transfer member physically connects these components, combining their functional roles while using the driver circuit's waste heat for thermal management, thereby eliminating separate heating/cooling devices.
Solution Approach 2:
The driver circuit is given multiple functions: electrical driving of the light source element and thermal management through heat transfer. This multi-functionality eliminates the need for dedicated temperature control devices, reducing module complexity and cost.
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 configuration enables stable operation of the optical transmission module across a wide temperature range while reducing power consumption and costs, preventing deterioration of the light source element's characteristics.
Implementation Method 1
a heat transfer member connected to each of the light source element and the driver circuit to transfer heat between the light source element and the driver circuit
Data Source
AI summary
An optical transmission module includes a light source element for emitting a predetermined light signal transmitted through an optical fiber, the light source element having lower characteristics in a low-temperature state than those in a high-temperature state, a driver circuit for driving the light source element, and a heat transfer member connected to each of the light source element and the driver circuit to transfer heat between the light source element and the driver circuit. The optical transmission module with such configuration can stably operate in a wide temperature range while achieving power saving and cost reduction.