Introduction to the Composition of BOSA Packaging Structure of Optical Devices- -Liang Bing

 What is an optical device BOSA

 The optical device BOSA is a part of the constituent optical module, which consists of devices such as transmitting and receiving.

 The light emission part is called TOSA, the optical reception part is called ROSA, and the two together are called BOSA.

Its working principle: A conversion device that converts an optical signal (electrical signal) with information into an electrical signal (optical signal).

picture of real products

Structure diagram of the BOSA device

The BOSA mainly includes the following key components:

1. Transmitter cell LD and receiving cell PD-TIA;

2. Filter, 0 and 45 degrees; this device is required because of the transmitting and receiving light path;

3, Isolator, according to the wavelength of different light to choose different isolator; However, now manufacturers generally omit this device (caused by cost and process), which directly leads to the problem that the output eye diagram is seriously jitter and needs to be added externally.;

4, adaptation and tail fiber, according to the cost and different application scenarios to choose;

5. The base.

Process assembly

1. Wave plate dispensing is fixed in the base, and then dried by high temperature;

2. The adapter and the transition ring are welded together by laser;

3. The combination of adapter and transition ring and the base are welded together by laser;

4.The launching tube core and the base are pressed together first, and then laser spot welding is performed.

5.The receiving tube core is first passed through coupling, then dispensing, and finally through high temperature drying.

The above is a brief introduction to the structure of optical device BOSA package. The module series sold by Shenzhen HDV Phoelectron Technology LTD., all involve the above knowledge points, such as: Optical communication module, universal optical module, ten gigabit multi-mode optical module, 1×9 optical module, optical communication module and so on, welcome the general needs of users to visit Shenzhen HDV Phoelectron Technology LTD., to understand.