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4 mm Large Aperture Plastic Fiber Sensor Connector
This is a large-aperture plastic optical fiber sensor connector with a 4 mm bore, intended for thick POF sensing and illumination links. The large bore centers the thick 4 mm plastic fiber used in industrial sensors and light delivery.
Product Overview
Sensor POF links often use very thick (several mm) plastic fiber to collect or deliver light. This connector’s 4 mm aperture is sized for those thick fibers, unlike standard 1.0 mm POF connectors.
It is used in industrial sensing, illumination and high-light-collection applications.
Key Features
- 4 mm large aperture
- For thick POF sensor fibers
- Industrial sensor and illumination links
- Robust plastic body
- Large-core light collection/delivery
Specifications
| Parameter | Value | Unit | Notes / Conditions |
|---|---|---|---|
| Connector type | Large-aperture sensor connector | – | 4 mm bore |
| Aperture | 4 | mm | Large-core POF |
| Fiber type | Thick POF | – | Sensor / illumination |
| Insertion loss (typical) | <=0.2 | dB | Per supplier generic table |
| Operating temperature | -40 ~ +75 | C | Per generic table |
| Cable diameter | 2.0 / 3.0 / 4.0 | mm | Per generic table |
Applications
- Industrial POF sensors
- Illumination light delivery
- High light-collection probes
- Machine vision POF links
See our full fiber optic connector range for other connector styles and fiber sizes. Visit the home page or read the FAQ for fiber selection help.
Ordering & Customization
We supply 4 mm large-aperture sensor connectors as kits or pre-assembled to length. Send the exact fiber OD and core size for a quote.
FAQ
What fiber diameter fits the 4 mm connector? The 4 mm aperture is for thick POF sensor fibers around 4 mm OD. Measure your actual fiber outer diameter and core before ordering; send us the dimensions and we will confirm the bore.
Why Choose Us
We match the connector bore to your actual thick sensor fiber rather than shipping a 1.0 mm connector that cannot center it.
For pricing, lead time or custom lengths, contact our sales team.
Related products: You may also need Metal SMA905 Fiber Optic Connector, 0.75 mm Bore, SOURIAU RCPOF1000B Original POF Connector and PMMA Fiber Optic Sensor Jumper, 650nm, Metal Ferrule.

