Opto-Electric Module Backside Cooling for High-Speed Heat Dissipation
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Solution Overview
Problem
Opto-electric modules face inefficiencies in cooling due to increased heat generation as signal transmission speeds rise, particularly in components like electronic and optical circuits.
Innovation Solution
An opto-electric module design featuring a heat-dissipating member in contact with a flat, unstepped second surface of the module, combined with an interface substrate for electrical and optical interconnects, and an optical coupling unit such as a mirror for efficient heat dissipation and signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If signal transmission speed is increased, then transmission performance is improved, but heat generation increases
Solution Approach 1:
The patent extracts the heat dissipation function from the conventional cooling structure by introducing a dedicated heat-dissipating member that contacts the back surface of the opto-electric hybrid device. This separate heat dissipation path allows the front surface to maintain optical functionality while the back surface handles thermal management, resolving the contradiction between high-speed transmission and heat control.
Solution Approach 2:
The heat-dissipating member acts as an intermediary between the opto-electric hybrid device and the external environment. It mediates the thermal energy transfer from the device to the surroundings, enabling efficient heat removal without interfering with the optical and electrical functions on the front surface, thus allowing high-speed transmission despite increased heat generation.
2Temperature
If conventional cooling structures are used, then cooling is provided, but cooling efficiency is insufficient
Solution Approach 1:
Instead of cooling the front surface where optical components are located, the patent inverts the cooling approach by applying the heat-dissipating member to the back surface of the opto-electric hybrid device. This inverted cooling strategy provides direct thermal access to the heat-generating components without complicating the optical path or front surface structure, thereby improving cooling efficiency while maintaining simplicity.
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 enables efficient cooling of opto-electric modules by effectively dissipating heat generated in electronic and optical circuits, enhancing the module's cooling performance.
Implementation Method 1
a heat-dissipating member disposed in contact with the second surface of the opto-electric hybrid device
Implementation Method 2
the optical coupling unit is a mirror formed on an end face of the optical interconnect
Data Source
AI summary
To provide an opto-electric module that can be cooled efficiently. An opto-electric module comprises: an opto-electric hybrid device provided with an electronic circuit and an optical circuit driven by the electronic circuit, the opto-electric hybrid device having a first surface and a second surface on an opposite side from the first surface, such that an electrical input and output unit with respect to the electronic circuit and an optical input and output unit with respect to the optical circuit are disposed on the first surface; an interface substrate which is disposed near the first surface of the opto-electric hybrid device and which is provided with an electrical interconnect coupled to the electrical input and output unit, an optical interconnect coupled to the optical input and output unit, an electrical interface which is connected to the electrical interconnect and also connectible to an external electrical interconnect, and an optical interface which is connected to the optical interconnect and also connectible to an external optical interconnect; and a heat-dissipating member disposed in contact with the second surface of the opto-electric hybrid device.