Industry News
What is TOSA (Transmitter Optical Subassembly)?
Views : 1028
Author : JIUZHOU
Update time : 2024-11-07 16:49:44
It is the abbreviation of Transmitter Optical Subassembly, which is mainly used to convert electrical signals into optical signals (E/O conversion). The performance indicators include optical power, threshold, etc.
The relevant introduction of TOSA (Transmitter Optical Subassembly) is as follows:
Optical transmission module: There are two types of single-mode optical transmission module and multi-mode optical transmission module. The overall product architecture includes two major parts: optical submodule and electronic submodule.
First, the epitaxial part uses gallium arsenide, indium phosphide, indium gallium arsenide, etc. as light-emitting and light-detecting materials. They are made into epitaxial wafers using methods such as organic metal vapor deposition. In the chip manufacturing process, laser diodes are then made.
The laser diode is then matched with components such as filters and metal covers. The package is made into a TO can, and then this TO can and components such as ceramic sleeves are packaged into an optical submodule (OSA).
Finally, it is matched with an electronic submodule (ESA), which contains two driver ICs for transmission and reception. This is used to drive the laser diode and the photodetector diode, and the combination forms an optical transmission module.
The optical submodule can be further divided into the optical transmitter submodule and the optical receiver submodule.
The main performance indicators of TOSA: optical power value (Po), center wavelength (λc) and other performance indicators. The commonly used unit of optical power is mW (or uW); the unit of center wavelength is nm, and common wavelengths are λc=850nm, λc=1310nm, λc=1490nm, λc=1550nm, etc.
The above is an introduction to TOSA (optical transmitter submodule).
The relevant introduction of TOSA (Transmitter Optical Subassembly) is as follows:
Optical transmission module: There are two types of single-mode optical transmission module and multi-mode optical transmission module. The overall product architecture includes two major parts: optical submodule and electronic submodule.
First, the epitaxial part uses gallium arsenide, indium phosphide, indium gallium arsenide, etc. as light-emitting and light-detecting materials. They are made into epitaxial wafers using methods such as organic metal vapor deposition. In the chip manufacturing process, laser diodes are then made.
The laser diode is then matched with components such as filters and metal covers. The package is made into a TO can, and then this TO can and components such as ceramic sleeves are packaged into an optical submodule (OSA).
Finally, it is matched with an electronic submodule (ESA), which contains two driver ICs for transmission and reception. This is used to drive the laser diode and the photodetector diode, and the combination forms an optical transmission module.
The optical submodule can be further divided into the optical transmitter submodule and the optical receiver submodule.
The main performance indicators of TOSA: optical power value (Po), center wavelength (λc) and other performance indicators. The commonly used unit of optical power is mW (or uW); the unit of center wavelength is nm, and common wavelengths are λc=850nm, λc=1310nm, λc=1490nm, λc=1550nm, etc.
The above is an introduction to TOSA (optical transmitter submodule).
Related News
Read More >>
Optical Connectivity: The Engine of AI Scaling
May .08.2026
With the rapid growth of generative AI and large language models, data centers are quickly becoming intelligent computing centers. The growing demand for computing power from AI models is not just about performance.
5G Core & MEC: AI-Driven Growth Through 2030
Apr .17.2026
Global communications infrastructure is currently witnessing a long-awaited "second wave of explosive growth."
6G Outlook: The Future of Next-Gen Wireless Communication
Apr .03.2026
The transition from 5G to 6G is more than just faster internet speeds. 6G will bring new changes to network design, operation, and business models. Wireless communication will become smarter, more efficient, and more energy-efficient.
Ready or Not, Next-Gen Communication Is Here
Mar .20.2026
Standardization efforts for the next generation of mobile communication technologies commenced in 2025. They project commercial deployment to take place around 2030.