WDM Module for Platinum | PL7635
The PL7635 WDM module is a passive optical diplexer for Sat-Light Platinum Series RF over Fiber systems, designed to structure optical signal routing within single-fiber architectures. It supports integration in high-density rack environments where controlled optical separation and efficient fiber utilization are required. The module operates without electrical power and functions as a fixed optical infrastructure component.
Features & Benefits
- 1310 nm / 1550 nm optical channel separation
- Insertion loss ≤ 0.8 dB per channel
- Optical isolation ≥ 17 dB between ports
- Optical return loss ≥ 55 dB performance level
- Wave dependent loss ≤ 0.15 dB stability
- Temperature dependent loss ≤ 0.15 dB variation
- Polarization dependent loss ≤ 0.1 dB control
- Maximum optical power handling 500 mW
- Passive operation with zero power requirement
- Single-fiber bidirectional signal capability
- Supports dual RF over Fiber channel routing
- Stable performance across -10°C to +55°C range
- Designed to withstand 20G at 11 ms [½ sine pulse] in non-operating configuration
In large-scale RF over Fiber deployments, the challenge is rarely signal transmission itself but the complexity of managing fiber infrastructure as systems scale across multiple racks and sites. The PL7635 addresses this at the architectural level by reducing fiber dependency between chassis, enabling operators to consolidate optical routing without redesigning existing RF transport layers.
For system integrators, the primary value lies in network simplification and deployment scalability. The device is easy to install due to the reduced number of physical fiber runs required between modules and racks. This improves maintainability, and reduces failure points associated with connector-heavy architectures. The PL7635 is suitable for long-term deployments where operational continuity, fiber efficiency, and system expansion flexibility are primary procurement drivers.
Basic Details
| RF Specification | Value |
| Frequency Range – Bandwidth | 1310nm: 1295 to 1325; 1550nm: 1528 to 1565 |
| Insertion Loss | 0.8 dB |
| Isolation between 1310 to 1550 nm ports | 17 dB |
| Optical return loss | -55 dB |
| Wave dependent loss | 0.15 |
| Operating Temperature Range | -10 to +55 |
| Storage Temperature Range | -45 to +85 |
What is the PL7635 WDM module used for in RF over Fiber systems?
It is used to optimize optical infrastructure by enabling multiple optical channels to share a single fiber, reducing the need for additional fiber routing in RF over Fiber deployments.
Does the PL7635 require external power or configuration?
No. The module is fully passive and operates without electrical power or software configuration, making it suitable for fixed optical infrastructure deployments.
How does the module impact fiber infrastructure design?
It reduces the number of physical fiber runs required between system components, simplifying rack-to-rack and site-to-site optical connectivity planning.
Is product suitable for bidirectional optical transmission?
Yes. It supports bidirectional operation by enabling structured wavelength separation over a single fiber path for upstream and downstream signal routing.