The optical splitter is one of the important passive devices in the optical fiber link. It mainly plays the role of light splitting. It is generally used to split the optical signal between the optical line terminal OLT and the optical network terminal ONU of the passive optical network. So what are the important technical indicators of the optical splitter? The following Huijue Network will give you detailed answers!

1. Insertion loss

The insertion loss of a fiber optic splitter refers to the dB number of each output relative to the input optical loss. In general, the smaller the insertion loss value, the

2. Splitting ratio

The splitting ratio is defined as the output power ratio of each output port of the fiber splitter. Usually, the splitting ratio of the PLC optical splitter is evenly distributed, and the splitting ratio of the fused tapered optical splitter can be unequal. The specific ratio setting of the split ratio is related to the wavelength of the transmitted light. For example, when an optical branch transmits light of 1.31 microns, the split ratio of the two output ends is 50:50; when it transmits light of 1.5 μm, it becomes 70: 30 (the reason for this situation is that the optical fiber splitter has a certain bandwidth, that is, the frequency bandwidth of the transmitted optical signal when the splitting ratio is basically unchanged).

3. Isolation

Isolation refers to the isolation ability of a certain optical path of a fiber optic splitter from optical signals in other optical paths.  

4. Return loss

Return loss, also known as reflection loss, refers to the power loss of an optical signal returned or reflected by a discontinuity in an optical fiber or transmission line. The greater the return loss, the better, to reduce the impact of reflected light on the light source and system. In addition, uniformity, directivity, PDL polarization loss, etc. are also parameters that affect the performance of optical splitters. Optical fiber splitter is one of the most important passive devices in optical fiber links, especially suitable for connecting MDF and terminal equipment in passive optical networks (EPON, GPON, BPON, FTTX, FTTH, etc.) to distribute optical signals. The above is the introduction of the important technical indicators of the optical splitter. If you have other questions, you can consult us at any time.