{"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\/fr\/1xn-vs-2xn-plc-splitter\/","title":{"rendered":"R\u00e9partiteurs PLC 1xN et 2xN dans les r\u00e9seaux d'acc\u00e8s"},"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

Utilisez le tableau de d\u00e9cision pour traduire ce sujet en crit\u00e8res pr\u00e9cis r\u00e9gissant l'achat, la conception et la r\u00e9ception. Chaque ligne doit \u00eatre valid\u00e9e par rapport aux normes en vigueur concernant l'\u00e9quipement, l'itin\u00e9raire et la destination, plut\u00f4t que d'\u00eatre simplement copi\u00e9e \u00e0 partir d'un catalogue g\u00e9n\u00e9rique.<\/p>\n\n\n\n\n\n\n\n\n\n
Domaine de d\u00e9cision<\/th>\n\u00c9l\u00e9ments \u00e0 pr\u00e9ciser<\/th>\nPourquoi est-ce important ?<\/th>\n\u00c9l\u00e9ments de preuve \u00e0 conserver<\/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
Spares<\/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

Les commandes ci-dessous \u00e9tablissent un lien entre le plan, l'\u00e9chantillon, le lot de production et le r\u00e9sultat de l'installation. Elles sont d\u00e9lib\u00e9r\u00e9ment ax\u00e9es sur la praticit\u00e9 : chacune d'entre elles g\u00e9n\u00e8re un document que les \u00e9quipes des achats, de l'ing\u00e9nierie et du terrain peuvent consulter ult\u00e9rieurement.<\/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

Contr\u00f4les de r\u00e9ception et de remise<\/h2>\n

Convenez de la m\u00e9thode et de la marche \u00e0 suivre avant le d\u00e9but des essais. Un r\u00e9sultat pour lequel le responsable du dossier ou les mesures \u00e0 prendre en cas d'\u00e9chec n'ont pas \u00e9t\u00e9 d\u00e9finis est difficile \u00e0 exploiter lors de la validation de l'exp\u00e9dition ou de la mise en service.<\/p>\n\n\n\n\n\n\n\n\n\n
V\u00e9rifier<\/th>\nM\u00e9thode<\/th>\nEnregistrer<\/th>\nMesure en cas de d\u00e9faillance<\/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
Budget<\/td>\nCalculate each active path<\/td>\nLoss table<\/td>\nChange ratio or architecture<\/td>\n<\/tr>\n
Continuit\u00e9<\/td>\nTest every input-output pair<\/td>\nPort matrix<\/td>\nCorrect mapping<\/td>\n<\/tr>\n
Performances optiques<\/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

Normes et justificatifs \u00e0 joindre au bon de commande<\/h2>\n

Corning pr\u00e9sente les formats des composants, des modules et des racks, et pr\u00e9cise que sa gamme de s\u00e9parateurs PLC est conforme aux normes GR-1209\/1221. Voir R\u00e9f\u00e9rence relative \u00e0 la qualification des s\u00e9parateurs de Corning PLC<\/a>.<\/p>\n

Le document de 2025 d\u00e9crit les normes GPON, XG(S)-PON, 50G-PON ainsi que les r\u00e9f\u00e9rences relatives \u00e0 la coexistence dans les r\u00e9seaux d'acc\u00e8s. Voir Document technique de l'UIT sur l'acc\u00e8s \u00e0 haut d\u00e9bit<\/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