Optical Transmitter Package With Airtight Cylindrical Coupling
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Solution Overview
Problem
Conventional optical transmitter modules require entire replacement if a single component is damaged, leading to economic inefficiencies due to the lack of individual component replaceability in wavelength-division multiplexing systems.
Innovation Solution
An optical transmitter package structure comprising a base with a flat surface carrying a laser semiconductor, a positioning ring, a circuit substrate for electrical connection, and a cylindrical light-coupling mechanism with an optical fiber butt-coupling element and optical isolator, allowing for modular and airtight assembly to prevent moisture ingress and enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a plurality of laser semiconductors are packaged into one optical transmitter module for WDM, then the data transfer rate is increased, but the entire module must be replaced if any component is damaged, leading to economic inefficiency
Solution Approach 1:
The optical transmitter module is divided into independent functional components: laser semiconductor, spherical lens, optical isolator, and optical fiber butt-coupling element. Each component is mounted on a common base with standardized positioning rings and mounting structures, allowing individual components to be replaced without replacing the entire module. This segmentation enables cost-effective maintenance while preserving the high-data-transfer-rate capability of the WDM system.
2Productivity
If conventional optical transmitter modules are used, then wavelength-division multiplexing is achieved, but the modules are not airtight and allow moisture ingress, reducing durability
Solution Approach 1:
The positioning ring, base, and package housing are integrated into a unified airtight structure. The positioning ring is formed as an integral part of the base with a milling process that creates a continuous sealing surface. The package housing covers the flat surface portion and seals together with the base, forming an airtight enclosure that protects all optical components (laser semiconductor, spherical lens, optical isolator) from moisture ingress while maintaining WDM functionality.
3Manufacturing precision
If the positioning ring is integrally formed with the flat surface portion by milling, then manufacturing precision is improved, but the structural complexity increases
Solution Approach 1:
The integrally formed positioning ring serves multiple functions simultaneously: it provides precise positioning for the laser semiconductor through the annular channel, creates a sealing surface for the airtight enclosure, and acts as a structural support element. This multi-functionality reduces the need for separate positioning components, thereby reducing overall structural complexity while maintaining high manufacturing precision through the milling process.
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
The solution results in a compact, airtight, and sturdy optical transmitter structure that is resistant to damage and moisture, enabling long service life and cost-effective maintenance by allowing individual component replacement.
Implementation Method 1
the lens holder is mounted therein with a spherical lens corresponding to the annular channel
Implementation Method 2
the optical fiber butt-coupling element is provided therein with an optical isolator corresponding in position to the spherical lens
Implementation Method 3
the cylindrical body is fixed in position by soldering after being properly moved axially in the adjusting space
Data Source
AI summary
An optical transmitter package structure, comprising: a base, a circuit substrate, and a cylindrical light-coupling mechanism. The optical transmitter package structure of the present invention has following advantageous effects: once the packaging process of the optical transmitter of the present invention is completed, the resulting structure is compact and airtight. Consequently, the optical transmitter is well protected against moisture during use and has a long service life; the optical transmitter of the present invention has a sturdy overall structure which is resistant to damage by improper operation during assembly.