Views: 0 Author: Site Editor Publish Time: 2022-11-02 Origin: Site
First of all, there is an obvious difference in interface type. The BIDI single-fiber bidirectional optical module adopts simplex SC or LC interface, while the dual-fiber bidirectional optical module adopts duplex LC interface, one for optical transmitting interface and the other for optical receiving interface.
In its literal sense, bidirectional means that optical signals in both directions can be transmitted and transmitted in a single fiber, like a bidirectional single lane, where vehicles in both directions travel in the same lane. Biofilms, on the other hand, are like two lanes in each direction, transmitting signals in the same direction in a single fiber.
The BIDI optical module has only one interface, which can be divided into LC and SC. The filter in the optical module is used to transmit the 1310nm optical signal and receive the 1550nm optical signal at the same time, or vice versa. Therefore, the modules must be used in pairs, and its biggest advantage is to save fiber resources.
However, the price of the single-fiber BIDI optical module is more expensive than that of the dual-fiber optical module. Since only one optical fiber is needed for transmission, the actual application cost will be lower than that of the dual-fiber optical module when the transmission link is long enough.
In addition, the optical devices used by the dual-fiber optical module and the BIDI single-fiber optical module are different. The transceiver devices of the dual-fiber optical module consist of TOSA and ROSA, while the BIDI single-fiber optical module consists of BOSA.
Among them, the components of TOSA (light emitting component) include TO-CAN laser, adapter, tube core sleeve, isolator and regulating ring, and the components of ROSA (light receiving component) include detector and adapter, while BOSA combines the laser and detector together. Compared with TOSA and ROSA, BOSA has more components including filter and base.
