Fiberdyne Labs FLM-112-150-011 1x2 50/50 OM3 Multimode Fiber Optic Coupler

Fiberdyne Labs FLM-112-150-011 1x2 50/50 OM3 Multimode Fiber Optic Coupler

The Fiberdyne Labs FLM-112-150-011 is a 1x2 multimode fiber optic splitter/coupler designed for optical systems operating with 850 nm laser signals. The passive component accepts one optical input and distributes the signal between two output ports using a nominal 50/50 coupling ratio.

The assembly uses 50/125 µm OM3 multimode fiber and is terminated with FC/UPC connectors. Its Y-cable construction provides one common optical leg and two branch legs within a 1-meter overall assembly, supporting convenient integration with compatible optical sources, receivers, power meters, switches, transceivers, and laboratory test equipment.

The coupler is housed in a compact package measuring approximately 4 x 0.6 x 0.3 inches. This narrow form factor supports installation in laboratory fixtures, production systems, optical network simulators, equipment enclosures, and custom multimode test assemblies where passive division of an 850 nm optical signal is required.

As a passive optical component, the FLM-112-150-011 requires no electrical power, software, firmware, or external controller. Optical performance depends on the connected source, launch conditions, connector cleanliness, fiber routing, receiving equipment, and the condition of the complete optical path.

Features and Benefits of the Fiberdyne Labs FLM-112-150-011

The Fiberdyne Labs FLM-112-150-011 provides a straightforward method of distributing an 850 nm multimode optical signal between two compatible optical paths.

• 1x2 optical configuration: Accepts one optical input and provides two optical output paths.
• 50/50 coupling ratio: Divides the optical signal nominally and evenly between both output branches.
• 850 nm laser-link compatibility: Designed for compatible multimode laser systems operating at 850 nm.
• 50/125 µm OM3 fiber: Supports compatible OM3 multimode sources, receivers, patch cords, transceivers, and test instruments.
• FC/UPC connectors: Provides secure threaded optical connections with ultra-physical-contact ferrule geometry.
• One-meter Y-cable assembly: Supports practical routing between the optical source and two connected devices.
• Compact coupler housing: Measures approximately 4 x 0.6 x 0.3 inches for integration into space-conscious systems.
• Passive optical operation: Requires no electrical supply, control interface, or software.
• Laboratory and production integration: Suitable for signal distribution, comparative measurements, receiver testing, and custom optical fixtures.
• Reusable fiber optic component: Supports repeated testing and system integration when correctly handled, cleaned, and protected.

1x2 Multimode Optical Configuration

The FLM-112-150-011 uses a 1x2 configuration consisting of one common optical port and two branch ports. An optical signal launched into the common port is divided between the two outputs.

This arrangement is useful when one 850 nm source must provide optical signals to two receivers, detectors, power meters, test paths, or other compatible devices. The coupler can also support comparative measurements in which one branch serves as a reference path and the second branch connects to a device under test.

The component is a splitter/coupler rather than an optical switch. Both output branches receive optical energy simultaneously, and the assembly does not electronically select between the two paths.

50/50 Coupling Ratio

The documented coupling ratio is 50/50. Under nominal operating conditions, the coupler divides the incoming optical power evenly between the two output branches.

A 50/50 split does not mean that each output receives the same optical power as the original input. Dividing one signal into two paths inherently reduces the power available at each output, and the coupler introduces additional passive optical loss.

The exact power at each output depends on the optical input level, source launch condition, coupling-ratio tolerance, connector loss, fiber condition, and other components in the test path. A calibrated optical power meter should be used when branch power or channel balance must be documented.

850 nm Laser-Link Applications

The FLM-112-150-011 is intended for compatible 850 nm laser links. The 850 nm wavelength region is commonly used for short-reach multimode fiber communication, laboratory testing, transceiver development, data communications equipment, and optical network simulation.

The optical source, receivers, detectors, power meters, and other components connected to the coupler should support 850 nm operation and 50/125 µm OM3 multimode fiber.

Source launch conditions can significantly affect multimode measurements. Connector alignment, modal distribution, fiber bends, patch-cord selection, and routing should remain consistent when comparing output levels or performing repeatable tests.

50/125 µm OM3 Multimode Fiber

The assembly uses 50/125 µm OM3 multimode fiber. Compatible OM3 patch cords and equipment should be used throughout the optical system when controlled multimode performance is required.

OM3 fiber is associated with laser-optimized multimode applications near 850 nm. Maintaining the correct fiber type helps preserve the intended launch condition and reduces uncertainty caused by mixing incompatible single-mode or multimode fiber types.

The fiber should be protected from excessive bending, pulling, twisting, crushing, and repeated mechanical stress. Sharp bends can increase optical loss, alter modal distribution, and reduce measurement repeatability.

FC/UPC Optical Connectors

The FLM-112-150-011 is terminated with FC/UPC connectors. FC connectors use a threaded coupling mechanism that provides a secure mechanical connection, while the UPC ferrule polish supports compatible non-angled physical-contact interfaces.

Only compatible FC/UPC or supported FC/PC interfaces should be connected according to the requirements of the complete optical system. FC/APC connectors must not be directly intermated with FC/UPC connectors because angled and non-angled ferrules have incompatible end-face geometries.

Every connector should be inspected and cleaned before mating. Contamination can increase insertion loss, create unstable power readings, reduce return-loss performance, and damage both connector end faces.

One-Meter Y-Cable Assembly

The coupler is supplied as a Y-cable assembly with an overall length of approximately one meter. The common input leg enters the optical coupler housing, while two branch legs provide the split optical outputs.

The Y-cable format allows the coupler to be installed between a source and two receiving paths without requiring separate coupler modules and patch cords. The assembly should be routed so that the coupler housing and optical connectors are supported independently.

The fibers should not be used to carry the weight of the coupler housing. Suitable strain relief and cable management help protect the fiber transitions and reduce the risk of mechanical damage.

Typical Applications

The Fiberdyne Labs FLM-112-150-011 is suitable for professional applications such as:

• 850 nm multimode optical signal splitting
• OM3 fiber optic network simulation
• Multimode transceiver testing
• Receiver and detector evaluation
• Reference and measurement path creation
• Optical power comparison
• Laboratory photonics experiments
• Data communications equipment testing
• Production and quality-control fixtures
• Custom optical system integration
• Telecommunications research and development
• Replacement multimode splitter/coupler requirements

Product Overview

Brand	Fiberdyne Labs
Model	FLM-112-150-011
Product Category	Multimode Fiber Optic Splitter/Coupler
Optical Configuration	1x2
Coupling Ratio	50/50
Application Wavelength	850 nm
Fiber Type	50/125 µm OM3 multimode fiber
Connector Type	FC/UPC
Cable Configuration	Y-cable
Overall Cable Length	1 meter
Primary Application	Passive division of an 850 nm multimode optical signal between two output paths

 

Specifications

Specification	Details
Manufacturer	Fiberdyne Labs
Part Number	FLM-112-150-011
Component Type	Multimode optical splitter/coupler
Port Configuration	One common port and two branch ports
Coupling Ratio	50/50
Operating Application	850 nm laser links
Fiber Core and Cladding	50/125 µm
Fiber Classification	OM3 multimode
Optical Connectors	FC/UPC
Overall Length	1 meter
Housing Dimensions	Approximately 4 x 0.6 x 0.3 inches
Electrical Power Required	No

 

Installation and Optical Setup

The coupler should be installed in a clean, mechanically stable location. The housing should be secured or supported so that its weight is not carried by the attached fibers.

The common and branch legs should be identified before the component is connected. A clear port map helps prevent the optical source or receiving devices from being attached to an unintended path.

All FC/UPC connectors should be inspected and cleaned before mating. Compatible 50/125 µm OM3 equipment should be used throughout the optical system.

When the source power is unknown, the signal should be measured with a compatible optical power meter before connection. Each branch output can then be measured to verify optical continuity and the approximate 50/50 split.

Fiber and Connector Care

The Y-cable assembly should be routed using broad curves and suitable cable supports. Tight bends, sharp edges, compression, pulling, twisting, and repeated flexing should be avoided.

Protective caps should remain installed on unused FC/UPC connectors. Only clean caps should be placed on cleaned connector end faces.

The coupler housing should be protected from impact, moisture, contamination, excessive tension, and unauthorized disassembly. Opening the housing can damage the internal fiber coupling structure.

Comprehensive Functional and Performance Testing

The Fiberdyne Labs FLM-112-150-011 receives comprehensive functional and performance testing before shipment. Evaluation may include visual inspection of the coupler housing, one-meter Y-cable, strain relief, fiber jackets, and all FC/UPC connectors.

Optical testing may include continuity from the common port to both output branches, measurement of branch power, and comparison of the two outputs using a compatible 850 nm multimode source and calibrated optical power meter.

The assembly may be inspected for damaged fibers, excessive bends, jacket cuts, loose strain relief, contaminated connectors, damaged ferrules, cross-threaded FC housings, unauthorized splices, or visible housing damage.

The exact testing scope depends on the available 850 nm source, controlled multimode launch, OM3 reference cables, calibrated optical power meter, connector inspection equipment, and required measurement uncertainty.

Buyer Considerations

Buyers should confirm the complete model as Fiberdyne Labs FLM-112-150-011 and verify that the required application uses 850 nm signals and 50/125 µm OM3 multimode fiber.

The 50/50 specification identifies the intended coupling ratio but does not provide the tolerance, insertion loss, excess loss, directivity, return loss, or operating-temperature range. These values should not be assumed without supporting documentation or direct testing.

The product listing should identify the condition of all three FC/UPC connectors, fiber jackets, strain-relief points, Y-cable branches, coupler housing, protective caps, and any included test records.

Only the Fiberdyne Labs FLM-112-150-011 splitter/coupler and accessories specifically identified in the product listing should be considered included.

Why Buy from AssetRelay?

AssetRelay supplies professional equipment and product solutions for fiber optic, telecommunications, optical testing, photonics, laboratory, production, inspection, cleaning, electronic testing, RF/microwave, and technical research applications. The Fiberdyne Labs FLM-112-150-011 supports network equipment developers, optical laboratories, transceiver manufacturers, production facilities, system integrators, universities, and research organizations.

Buyers should review the 1x2 configuration, 50/50 coupling ratio, 850 nm application, 50/125 µm OM3 fiber, FC/UPC connectors, one-meter Y-cable, housing condition, functional test results, and included accessories before purchase.