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  The BIDI optical module is a single-fiber bidirectional optical module, namely BiDi (Bidirectional). The conventional module is a dual-fiber module (connected by two optical fibers), and there are two optical fiber ports at the optical fiber interface: the transmitting port (TX) and the receiving port (RX), while the BIDI module is a single-fiber module with only one optical fiber port and one optical fiber port. Different optical signals are transmitted and received inside, so BIDI optical modules must be used in pairs. In terms of appearance, the BIDI module has only one port and is connected with only one optical fiber. The working principle of the BIDI optical module is to filter through the filter in the optical module (filter the unnecessary central wavelength), and complete the transmission of an optical signal of one wavelength and the reception of an optical signal of another wavelength at the same time. In order to achieve two-way communication, there must be The other end

With the rapid development of 5G, AI, big data, cloud computing and other services, the data center network is required to develop in the direction of high speed, high density, and efficient operation and maintenance. At present, 100G is widely used in China. This article introduces three mainstream solutions for 100G multimode optical modules. 1) 100G QSFP28 SR4 Interface type: multi-mode MPO-12F working principle: The center wavelength of 100GBASE-SR4 is 850nm, which can provide four independent transmission and reception channels, and the operating rate of each channel can reach 25G. The transmission distance is 70m when used with OM3 multimode fiber and 100m when used with OM4 multimode fiber. 2) 100G QSFP28 SRBD Interface type: multimode duplex LC working principle The transmission wavelength of the 100GBASE-SRBD optical module is 850nm and 900nm, and the SWDM wavelength division multiplexing technology is used to multiplex the optical signals of different wavelengths in the same

CWDM (Coarse Wavelength Division Multiplexing) is a technique for combining multiple optical signals on a single fiber by using different wavelengths of light. CWDM technology is widely used in modern communication networks, and it enables significant cost savings while improving network capacity and flexibility. CWDM multiplexers are at the core of this technology, allowing multiple data streams to be combined and transmitted over a single optical fiber. What is a CWDM Multiplexer? A CWDM multiplexer is an optical device that combines multiple wavelengths of light into a single optical signal. It uses the principle of combining different wavelengths of light into one fiber to transmit signals from multiple sources. Each wavelength is modulated with a unique data stream, and the CWDM multiplexer combines these signals into a single fiber. The signal is then transmitted to the receiver where it is de-multiplexed back to its original form. Advantages of CWDM Multiplexer The benefits of

  With the widespread use of WDM systems, more and more problems are beginning to emerge, especially for long distance transmission WDM systems, where signal attenuation has become the primary problem. This is where the WDM optical amplifier repeater family ( OEO ) comes into play.   With the widespread use of WDM systems, more and more problems are beginning to emerge, especially for long distance transmission WDM systems, where signal attenuation has become the primary problem. Although some emerging amplifiers such as EDFA, FRA, SOA have solved the problem of signal attenuation, they are expensive in terms of cost, particularly dangerous in terms of use (FRA) and cannot be used when incompatible equipment needs to be connected (e.g. 1300nm carrier wavelength conversion for optical networks). Since we have different providers for our fibre networks and different standards, we need a certain device to transition from one fibre network to another. This is where the WDM optical amplifie