Optical Module Attenuation Control via Movable Mirror and Absorbing Unit
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Solution Overview
Problem
Optical module design faces challenges in controlling the power level of optical signals, specifically attenuation, within the module itself.
Innovation Solution
An optical module with optoelectronic components, a free-space beam path, a mirror, and an attenuation unit that includes a reflecting and absorbing surface section, where a control unit adjusts the position and orientation of the mirror and attenuation unit to control the radiation directed towards the absorbing surface, utilizing a photodetector for feedback to achieve desired attenuation levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional optical module design is used, then the module structure is simple, but the ability to control attenuation of optical signal is insufficient
Solution Approach 1:
The patent implements dynamic control of optical signal attenuation by making the mirror tiltable and the attenuation unit movable. The control unit adjusts the mirror's tilt angle and the attenuation unit's position along the beam path, enabling real-time modification of the optical signal's power level without changing the overall module structure. This dynamic adjustment mechanism resolves the contradiction by providing adaptability while maintaining a relatively compact design.
Solution Approach 2:
The patent introduces a mirror and an attenuation unit as intermediary elements between the optical signal source and the detector. The mirror redirects the optical beam, while the attenuation unit (with reflecting and absorbing surface sections) selectively attenuates the signal. These intermediary components enable precise control of attenuation without requiring complex integration into the core optoelectronic components, thus improving control capability while managing structural complexity.
2Adaptability or versatility
If attenuation control components are added to the optical module, then the attenuation control capability is improved, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it controls the mirror's tilt angle, adjusts the attenuation unit's position, and processes feedback from the photodetector. By consolidating these control functions into a single unit, the patent reduces the number of separate control components needed, thereby improving attenuation control capability while minimizing the increase in device complexity.
Solution Approach 2:
The patent implements a feedback mechanism where the photodetector detects the optical signal level and provides feedback to the control unit. This closed-loop system enables automatic adjustment of the mirror and attenuation unit to achieve the desired signal level, reducing the need for manual intervention and complex control circuits. The feedback principle improves attenuation control capability while keeping the control system relatively simple.
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
Enables precise control of optical signal attenuation within the module, allowing for optimal signal management and transmission.
Implementation Method 1
Disposed within the beam path is at least one mirror and at least one attenuation unit
Implementation Method 2
the photodetector provides the control unit with a signal that indicates the amount of radiation being detected
Implementation Method 3
the attenuation unit includes a reflecting surface section and an absorbing surface section
Data Source
AI summary
An embodiment of the invention relates to an optical module comprising at least one optoelectronic component capable of generating or receiving radiation; at least one access port for receiving or emitting the radiation; at least one free-space beam path located between the access port and the optoelectronic component; at least one mirror located in said beam path; at least one attenuation unit located in said beam path; the attenuation unit having a reflecting surface section and an absorbing surface section; and, a control unit for adjusting the amount of radiation which is directed towards the absorbing surface section of the attenuation unit by controlling at least one or all of the following: the position of the mirror, the orientation of the mirror, the position of the attenuation unit and/or the orientation of the attenuation unit.