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Optical splitter quotation and specification loss description

Optical splitters offer technical indicators
1) Insertion loss.
The insertion loss of the optical splitter refers to the loss of each output in dB relative to the input light. The mathematical expression is: Ai=-10lg Pouti/Pin, where Ai is the insertion loss of the i-th output port; Pouti is The power of the i-th output port; Pin is the optical power of the input.
2) Additional losses.
The additional loss is defined as the number of DBs that the sum of the optical power of all output ports is lost relative to the input optical power. It is worth mentioning that, for the fiber coupler, the additional loss is an indicator that reflects the quality of the device manufacturing process, and reflects the inherent loss of the device manufacturing process. This loss is as small as possible, and is an assessment index of the quality of the production. The insertion loss only indicates the output power status of each output port. It not only has the inherent loss factor, but also considers the influence of the splitting ratio. Therefore, the difference in insertion loss between different fiber couplers does not reflect the quality of the device.
Optical splitter offer advantages and disadvantages
advantage
(1) The loss is insensitive to the wavelength of the transmitted light and can meet the transmission needs of different wavelengths.
(2) Uniform light distribution, even distribution of signals to users.
(3) Compact structure, small size, can be directly installed in the existing transfer box, without special design to leave a large installation space.
(4) There are many shunt channels for a single device, which can reach more than 32 channels.
(5) Multi-way cost is low, and the more the number of branches, the more obvious the cost advantage.
Shortcomings
(1) The device fabrication process is complicated and the technical threshold is high. At present, the chip is monopolized by several foreign companies, and there are only a few domestic enterprises that can mass-package and produce.
(2) High cost relative to melt pull cone splitters, especially in low channel splitters.

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