Product Overview
PLP-50 Pluggable Blocking FWDM is easily installed on existing GPON ONU equipment to block 1577nm XGS-PON signals. PLP-50 Pluggable Blocking FWDM is simple and low cost to solve the issue that 1577nm could cause interfering with 1550nm signal to CATV RF receiver in GPON ONU.
Block Diagram
Specifications
| Blocked Wavelength Range | 1577±5nm | 1572-1582 nm |
| Insertion Loss | ≤ 1.2dB | @1260~1360nm |
| ≤ 1.2dB | @1460~1570nm | |
| ≤ 1dB | @1600~1625nm | |
| Return Loss | >40dB | @1260~1360 |
| >40dB | @1460~1580 | |
| >30dB | @1590~1650 | |
| PDL | 0.4dB | |
| Ripple | 0.6dB | |
| TDL | 0.5dB | |
| Maximum Optical Power | 500mW | |
| Durability | >500times | |
| Connector Type | SC/APC | Optional LC/APC |
| Working Environment | -40 ~ +80°C | |
| Storage Environment | -40 ~ +85°C |
Welcome to enquiry our PLP-50 Pluggable Blocking FWDM Filter.
PLP-50: Pluggable 1577nm Blocking FWDM for XGS-PON Coexistence
A mission-critical “Plug-and-Protect” filter designed to eliminate 1577nm XGS-PON signal interference on legacy GPON CATV receivers during network upgrades.
- High-Selectivity 1577nm Blocking: The PLP-50 pluggable blocking FWDM precisely targets the 1572-1582nm range, effectively shielding sensitive CATV RF receivers from high-power XGS-PON downstream interference.
- Instant Plug-In Deployment: Engineered with a compact, plug-style housing (SC/APC or LC/APC), it can be installed directly onto existing ONU ports in seconds, requiring zero fiber splicing or technician downtime.
- Ultra-Low Insertion Loss: Maintains signal integrity with a minimal insertion loss of ≤1.2dB across the 1260-1360nm and 1460-1570nm windows, ensuring the primary GPON data and video services remain within budget.
- Exceptional Reliability: Built for carrier-grade durability with over 500 mating cycles and a wide operating temperature range from -40°C to +80°C, making it suitable for unconditioned outdoor cabinets.
- Cost-Effective Network Migration: Avoid the expense of replacing legacy GPON ONTs. This pluggable blocking FWDM provides a low-CAPEX solution for operators transitioning to 10G PON infrastructures.
Technical FAQ: Pluggable Blocking FWDM
Q1: Why is a blocking filter necessary during XGS-PON upgrades?
A: When adding XGS-PON to a legacy GPON network, the new 1577nm downstream signal can bleed into the 1550nm CATV receiver. This causes significant RF noise and pixelation. The pluggable blocking FWDM acts as a optical firewall, letting the 1550nm through while stopping the 1577nm dead.
Q2: Does the PLP-50 impact the upstream GPON signal?
A: No. The PLP-50 is engineered to be transparent to the 1310nm upstream window. With high return loss (>40dB), it ensures that the OLT-to-ONT communication remains stable without causing back-reflections or packet loss.
Q3: Is this filter compatible with different connector types?
A: While the standard version utilizes SC/APC connectors (the most common in FTTH deployments), we also offer LC/APC options upon request. This flexibility allows the pluggable blocking FWDM to be used across a variety of vendor-specific ONU hardware.
Building a new XGSPON Network?
If you are at the start of your 10G migration, consider our
PL1810A XGS-PON Combo OLT
to manage GPON and XGSPON traffic from the headend.