• October 27. 2026

In the optical communication industry, when selecting and developing optical modules, companies often focus on speed, transmission distance, and compatible equipment, but rarely delve into the core optical component—the OSA (Optical Sub-module). In fact, the iterative upgrade of optical module speed is essentially an iteration of the OSA optical architecture, light emission principle, and signal c...

• July 07. 2023

The role of optical modules in optical communication networks is photoelectric conversion. And they are the core components for photoelectric conversion in optical communication systems. Many engineers and buyers ask: what optical devices are mainly composed of optical modules? What are TOSA and ROSA? What roles do they play in optical transceivers? How do TOSA, ROSA and BOSA work together? This a...

• August 30. 2016

As long as you try very hard, you can achieve anything. If want to provide customers with first-class services and products, it is necessary to know the raw materials, production and sales thoroughly.   Thanks the purchasing manager very much for taking her busy schedule to train sales department!   ETU-Link is a professional manufacturer of optical transceiver, the main compon...