{"id":1242,"date":"2026-10-15T13:08:00","date_gmt":"2026-10-15T13:08:00","guid":{"rendered":"https:\/\/www.fenxifiber.com\/1xn-vs-2xn-plc-splitter\/"},"modified":"2026-10-02T09:59:57","modified_gmt":"2026-10-02T09:59:57","slug":"1xn-vs-2xn-plc-splitter","status":"publish","type":"post","link":"https:\/\/www.fenxifiber.com\/ar\/1xn-vs-2xn-plc-splitter\/","title":{"rendered":"\u0645\u0642\u0633\u0645\u0627\u062a PLC \u0628\u0646\u0638\u0627\u0645 1xN \u0645\u0642\u0627\u0628\u0644 2xN \u0641\u064a \u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0648\u0635\u0648\u0644"},"content":{"rendered":"

A 1xN splitter has one optical input path; a 2xN design provides two input paths to a common output set. The second input only creates operational value when the network architecture, protection switching, monitoring method and acceptance tests explicitly use it.<\/strong><\/p>\n

Buying a 2xN splitter as vague future insurance can add routing and documentation complexity without delivering resilience. The designer should draw normal and contingency signal paths, identify how both inputs are managed, and calculate the power budget for each planned operating state.<\/p>\n

\"One-by-sixteen<\/figure>\n

What Must Be Decided for 1xN vs 2xN PLC splitter?<\/h2>\n

\u0627\u0633\u062a\u062e\u062f\u0645 \u062c\u062f\u0648\u0644 \u0627\u0644\u0642\u0631\u0627\u0631 \u0644\u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0645\u0648\u0636\u0648\u0639 \u0625\u0644\u0649 \u0645\u062f\u062e\u0644\u0627\u062a \u0645\u062d\u062f\u062f\u0629 \u062a\u062a\u0639\u0644\u0642 \u0628\u0627\u0644\u0634\u0631\u0627\u0621 \u0648\u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0627\u0644\u0642\u0628\u0648\u0644. \u064a\u062c\u0628 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0643\u0644 \u0635\u0641 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0648\u0627\u0644\u0645\u0633\u0627\u0631 \u0648\u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0646\u0633\u062e\u0647 \u0645\u0646 \u0643\u062a\u0627\u0644\u0648\u062c \u0639\u0627\u0645.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0645\u062c\u0627\u0644 \u0627\u062a\u062e\u0627\u0630 \u0627\u0644\u0642\u0631\u0627\u0631<\/th>\n\u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u062a\u062d\u062f\u064a\u062f\u0647<\/th>\n\u0644\u0645\u0627\u0630\u0627 \u0647\u0630\u0627 \u0645\u0647\u0645\u061f<\/th>\n\u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0627\u0644\u0627\u062d\u062a\u0641\u0627\u0638 \u0628\u0647\u0627<\/th>\n<\/tr>\n<\/thead>\n
Topology<\/td>\nOne input or two controlled inputs<\/td>\nDefines actual use case<\/td>\nNormal and contingency diagrams<\/td>\n<\/tr>\n
Optical budget<\/td>\nLoss path for every state<\/td>\nConfirms receiver margin<\/td>\nApproved budget<\/td>\n<\/tr>\n
Input management<\/td>\nSwitching, monitoring or test role<\/td>\nPrevents unintended signals<\/td>\nOperating procedure<\/td>\n<\/tr>\n
Port mapping<\/td>\nInputs and outputs with durable IDs<\/td>\nAvoids cross-connection<\/td>\nContinuity schedule<\/td>\n<\/tr>\n
\u0642\u0637\u0639 \u0627\u0644\u063a\u064a\u0627\u0631<\/td>\nExact package and input configuration<\/td>\nSupports restoration<\/td>\nStock list<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

How to Control 1xN vs 2xN PLC splitter in the Project<\/h2>\n

\u062a\u0631\u0628\u0637 \u0639\u0646\u0627\u0635\u0631 \u0627\u0644\u062a\u062d\u0643\u0645 \u0623\u062f\u0646\u0627\u0647 \u0628\u064a\u0646 \u0627\u0644\u0631\u0633\u0645\u060c \u0648\u0627\u0644\u0639\u064a\u0646\u0629\u060c \u0648\u062f\u0641\u0639\u0629 \u0627\u0644\u0625\u0646\u062a\u0627\u062c\u060c \u0648\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629. \u0648\u0642\u062f \u0635\u064f\u0645\u0645\u062a \u0647\u0630\u0647 \u0627\u0644\u0639\u0646\u0627\u0635\u0631 \u0644\u062a\u0643\u0648\u0646 \u0639\u0645\u0644\u064a\u0629 \u0628\u0634\u0643\u0644 \u0645\u062a\u0639\u0645\u062f: \u0641\u0643\u0644 \u0645\u0646\u0647\u0627 \u064a\u064f\u0646\u0634\u0626 \u0633\u062c\u0644\u0627\u064b \u064a\u0645\u0643\u0646 \u0644\u0641\u0631\u0642 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a \u0648\u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0648\u0627\u0644\u0639\u0645\u0644 \u0627\u0644\u0645\u064a\u062f\u0627\u0646\u064a \u0645\u0631\u0627\u062c\u0639\u062a\u0647 \u0644\u0627\u062d\u0642\u064b\u0627.<\/p>\n

Draw both operating states<\/h3>\n

For a 2xN device, show which source feeds each input during normal service, maintenance and failure. Do not assume the second input is electrically or operationally managed by the passive component.<\/p>\n

Test each input path<\/h3>\n

Measure and record every input-to-output path required by the design. A report covering only one input leaves half of a 2xN assembly unverified.<\/p>\n

Protect unused ports<\/h3>\n

Cap, identify and control any input not placed in service. Maintenance instructions should prevent accidental connection of an uncontrolled source.<\/p>\n

Match the package to field work<\/h3>\n

Check tail routing and label visibility for two input fibres. The optical choice should not create an enclosure that technicians cannot trace safely.<\/p>\n

\"Two-by-sixteen<\/figure>\n

\u0641\u062d\u0648\u0635\u0627\u062a \u0627\u0644\u0642\u0628\u0648\u0644 \u0648\u0627\u0644\u062a\u0633\u0644\u064a\u0645<\/h2>\n

\u064a\u062c\u0628 \u0627\u0644\u0627\u062a\u0641\u0627\u0642 \u0639\u0644\u0649 \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0648\u0627\u0644\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0642\u0628\u0644 \u0628\u062f\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631. \u0641\u0645\u0646 \u0627\u0644\u0635\u0639\u0628 \u0627\u0644\u0627\u0633\u062a\u0641\u0627\u062f\u0629 \u0645\u0646 \u0623\u064a \u0646\u062a\u064a\u062c\u0629 \u0644\u0627 \u064a\u0648\u062c\u062f \u0644\u0647\u0627 \u0645\u0633\u0624\u0648\u0644 \u0645\u062d\u062f\u062f \u0639\u0646 \u0627\u0644\u0633\u062c\u0644 \u0623\u0648 \u0625\u062c\u0631\u0627\u0621 \u0645\u062d\u062f\u062f \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0641\u0634\u0644\u060c \u0648\u0630\u0644\u0643 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0625\u0641\u0631\u0627\u062c \u0639\u0646 \u0627\u0644\u0634\u062d\u0646\u0629 \u0623\u0648 \u0628\u062f\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644.<\/p>\n\n\n\n\n\n\n\n\n\n
\u062a\u062d\u0642\u0642<\/th>\n\u0627\u0644\u0637\u0631\u064a\u0642\u0629<\/th>\n\u0627\u0644\u0633\u062c\u0644<\/th>\n\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0641\u0634\u0644<\/th>\n<\/tr>\n<\/thead>\n
Topology review<\/td>\nTrace all states<\/td>\nSigned network diagram<\/td>\nReject undefined second input<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u064a\u0632\u0627\u0646\u064a\u0629<\/td>\nCalculate each active path<\/td>\nLoss table<\/td>\nChange ratio or architecture<\/td>\n<\/tr>\n
\u0627\u0644\u0627\u0633\u062a\u0645\u0631\u0627\u0631\u064a\u0629<\/td>\nTest every input-output pair<\/td>\nPort matrix<\/td>\n\u0627\u0644\u062a\u0639\u064a\u064a\u0646 \u0627\u0644\u0635\u062d\u064a\u062d<\/td>\n<\/tr>\n
\u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0628\u0635\u0631\u064a<\/td>\nMeasure required parameters<\/td>\nSerialized data<\/td>\nQuarantine failure<\/td>\n<\/tr>\n
Field labels<\/td>\nInspect both inputs and outputs<\/td>\nPhoto record<\/td>\nRelabel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"PON<\/figure>\n

\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0627\u0644\u0627\u0633\u062a\u0646\u0627\u062f \u0625\u0644\u064a\u0647\u0627 \u0639\u0646\u062f \u0625\u0635\u062f\u0627\u0631 \u0623\u0645\u0631 \u0627\u0644\u0634\u0631\u0627\u0621<\/h2>\n

\u062a\u064f\u062f\u0631\u062c \u0634\u0631\u0643\u0629 \u0643\u0648\u0631\u0646\u064a\u0646\u063a \u062a\u0646\u0633\u064a\u0642\u0627\u062a \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0648\u0627\u0644\u0648\u062d\u062f\u0627\u062a \u0648\u0627\u0644\u0631\u0641\u0648\u0641\u060c \u0648\u062a\u062d\u062f\u062f \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062a\u0623\u0647\u064a\u0644 \u0648\u0641\u0642\u064b\u0627 \u0644\u0645\u0639\u064a\u0627\u0631 GR-1209\/1221 \u0644\u0645\u062c\u0645\u0648\u0639\u062a\u0647\u0627 \u0645\u0646 \u0645\u0642\u0633\u0645\u0627\u062a PLC. \u0627\u0646\u0638\u0631 \u0645\u0631\u062c\u0639 \u062a\u0623\u0647\u064a\u0644 \u0645\u0642\u0633\u0645\u0627\u062a \u0634\u0631\u0643\u0629 \u0643\u0648\u0631\u0646\u064a\u0646\u063a \u0628\u064a \u0625\u0644 \u0633\u064a<\/a>.<\/p>\n

\u062a\u062a\u0646\u0627\u0648\u0644 \u0648\u0631\u0642\u0629 \u0639\u0627\u0645 2025 \u062a\u0642\u0646\u064a\u0627\u062a GPON \u0648XG(S)-PON \u064850G-PON \u0648\u0627\u0644\u0645\u0631\u0627\u062c\u0639 \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u062a\u0639\u0627\u064a\u0634 \u0641\u064a \u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0648\u0635\u0648\u0644. \u0627\u0646\u0638\u0631 \u0648\u0631\u0642\u0629 \u0641\u0646\u064a\u0629 \u0635\u0627\u062f\u0631\u0629 \u0639\u0646 \u0627\u0644\u0627\u062a\u062d\u0627\u062f \u0627\u0644\u062f\u0648\u0644\u064a \u0644\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a (ITU) \u062d\u0648\u0644 \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u0646\u0637\u0627\u0642 \u0627\u0644\u0639\u0631\u064a\u0636<\/a>.<\/p>\n

The G.9804.3 series defines the physical-media-dependent layer for 50G-PON. See ITU-T G.9804.3 50G-PON specification<\/a>.<\/p>\n

Design note<\/h2>\n

Use 2xN only when two inputs have a documented network function. Otherwise, a well-defined 1xN path is simpler to budget, label, test and maintain.<\/p>\n