Optical Module Dual-Channel Transmission via Semiconductor Optical Amplifier
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Solution Overview
Problem
Current optical communication systems are limited to transmitting only one branch of information, restricting bandwidth due to the single-channel information loading on optical signals.
Innovation Solution
An optical module comprising a laser device with an emission region and a modulation region, driven by a bias circuit for stable optical power and a modulation circuit to vary optical power, along with a semiconductor optical amplifier to carry two branches of information by differing signal frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-channel information loading method is used on optical signals, then the system structure is simple, but the bandwidth is limited
Solution Approach 1:
The patent transitions from single-dimensional (single-channel) information transmission to two-dimensional (dual-channel) transmission by utilizing the semiconductor optical amplifier's ability to process multiple frequency signals simultaneously. This dimensional expansion allows two independent information branches to be carried on the same optical signal without significantly increasing system structural complexity.
2Productivity
If dual-channel information is loaded on optical signals using different frequencies, then the bandwidth is enhanced, but the device complexity increases
Solution Approach 1:
The semiconductor optical amplifier serves multiple functions: it amplifies the optical signal while simultaneously enabling dual-channel information transmission through frequency differentiation. This multi-functionality allows the system to achieve enhanced bandwidth without proportionally increasing device complexity, as the same component handles both amplification and multi-channel signal processing.
Solution Approach 2:
The patent utilizes frequency as a variable parameter to distinguish between two information channels. By modulating signals at different frequencies and leveraging the semiconductor optical amplifier's frequency-selective gain characteristics, the system can separate and process two independent information streams, thereby increasing bandwidth without requiring completely separate transmission paths.
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 the transmission of two branches of information over a single optical signal, enhancing bandwidth by varying optical power based on distinct signal frequencies, effectively overcoming the limitations of single-channel information transmission.
Implementation Method 1
a laser device including an emission region, and a modulation region to which light emitted by the emission region is transmitted
Implementation Method 2
a semiconductor optical amplifier configured to receive the light from the modulation region, and to vary the optical power of the light emitted from the modulation region
Data Source
AI summary
The present disclosure relates to the field of optical communication, particularly to an optical module. An optical module according to embodiments of the disclosure includes: a laser device including an emission region, and a modulation region to which light emitted by the emission region is transmitted; a bias circuit connected with the emission region, configured to drive the emission region to emit light at stable optical power; a modulation circuit connected with the modulation region, configured to drive the modulation region, so that the modulation region varies the optical power of the light emitted from the emission region; and a semiconductor optical amplifier configured to receive the light from the modulation region, and to vary the optical power of the light.