1. Product Title

SM & MM Optical TAP Coupler – 1×2 / 2×4 Passive Monitoring Device

2. Product Overview

GracyFiber SM & MM Optical TAP Couplers are passive fiber optic monitoring devices designed to sample optical power with minimal disruption to live network traffic. Available in 1×2 and 2×4 configurations, the devices support both single-mode and multimode optical systems for real-time signal monitoring and diagnostics.

3. Key Features

• Single-mode and multimode configurations
• 1×2 / 2×4 optical configurations
• SM wavelength range: 1260–1650 nm
• MM wavelength range: 850 ±50 nm
• Flexible optical tap ratios
• Low-loss signal sampling
• High signal isolation
• Compact and robust passive construction
• Suitable for non-intrusive optical monitoring

The source documentation specifically identifies flexible tap ratios, broad wavelength support, low loss, high signal isolation, and compact construction as the core product characteristics.

4. Applications

• Real-Time DWDM / OTN Network Monitoring
• 5G Fronthaul Power Verification
• Mobile X-Haul Diagnostics
• Data Center Interconnect Link Health Monitoring
• FTTH & PON Test Points
• Optical Sensing Systems
• Optical Test Equipment Integration
• Non-Intrusive Signal Sampling

These applications are explicitly identified in the supplied documentation.

5. FAQ

What is an Optical TAP Coupler?

An Optical TAP Coupler is a passive fiber optic device used to sample a portion of an optical signal for monitoring or measurement while minimizing disruption to the live traffic path.

GracyFiber's Optical TAP devices are designed for real-time power sampling and network monitoring.

What is the wavelength range of the SM and MM Optical TAP?

The supplied specification provides:

• Single Mode: 1260–1650 nm
• Multimode: 850 ±50 nm

What configurations are available?

The Optical TAP is available in:

• 1×2
• 2×4

configurations.

What tap ratios are available?

The supplied documentation confirms flexible tap ratios, but does not provide specific values such as 90/10, 95/5, or 99/1.

Please contact GracyFiber with your required monitoring ratio and optical-budget requirements.

Can the Optical TAP be used without interrupting network traffic?

The product is specifically designed for signal monitoring with minimal disruption to live traffic, and the supplied application information identifies non-intrusive signal sampling without service interruption as a use case.

6. Technical Specifications

7. Configuration & Customization Options

Optical Mode

Available:

• Single Mode
• Multimode

Port Configuration

Available:

• 1×2
• 2×4

Wavelength

Single Mode

• 1260–1650 nm

Multimode

• 850 ±50 nm

8. Detailed Product Description

The GracyFiber SM & MM Optical TAP Coupler is designed to provide a passive optical monitoring point inside live fiber networks. Rather than interrupting the main link for measurement, the TAP device allows a defined portion of optical power to be sampled for monitoring, diagnostic, or test equipment while the primary traffic path remains in service.

The product is available in 1×2 and 2×4 configurations and supports both single-mode and multimode network architectures. For single-mode systems, the specified operating wavelength range is 1260–1650 nm, covering the broad telecom wavelength region used by multiple optical networking technologies. The multimode version operates at 850 ±50 nm, supporting short-reach multimode monitoring applications.

Flexible tap ratios allow the monitoring architecture to be selected according to the amount of optical power required by the measurement path while considering the optical budget of the live link. The exact available ratios require confirmation for the selected model.

The passive architecture makes the Optical TAP relevant to applications requiring continuous network visibility without active signal switching. The supplied documentation identifies real-time DWDM/OTN monitoring, 5G fronthaul diagnostics, DCI link-health assessment, FTTH/PON test points, sensing equipment, and non-intrusive signal sampling as target scenarios.

Its compact construction also enables integration into monitoring equipment and optical network infrastructure where installation space is limited.

9. Application Scenario

Application 1 — DWDM / OTN Real-Time Monitoring

In a DWDM or OTN system, network operators may need continuous access to optical power information without disconnecting the live transmission link.

The Optical TAP provides a passive sampling point that can route part of the optical signal to monitoring equipment while maintaining the main traffic path.

Real-time monitoring in DWDM/OTN systems is explicitly listed as an application.

Application 2 — 5G Fronthaul & Mobile X-Haul Diagnostics

5G transport links may require optical-power verification during commissioning, troubleshooting, or ongoing network monitoring.

The TAP device can provide a dedicated optical sampling interface for measurement and diagnostic equipment. The supplied documentation specifically lists 5G Fronthaul & Mobile X-Haul power verification and diagnostics.

Application 3 — FTTH / PON Test Point

In FTTH and PON infrastructure, an Optical TAP can provide a passive test point for optical monitoring without requiring the service link to be disconnected.

The supplied documentation explicitly identifies FTTH & PON test points and non-intrusive signal sampling as applications.

10. Why GracyFiber

GracyFiber provides passive optical components and fiber optic solutions for optical communication, wavelength management, network monitoring, data center interconnect, and photonics applications.

Related GracyFiber capabilities include:

• Optical TAP Devices
• WDM / CWDM / DWDM Components
• O-Band WDM
• AAWG
• Fiber Optic Couplers
• PLC Splitters
• FBT Couplers
• MPO/MTP Connectivity
• Fiber Arrays and passive optical assemblies

For an Optical TAP project, customers can provide the required optical mode, wavelength, port configuration, tap ratio, fiber type, connector, and target optical specifications for technical evaluation.

11. Related Products

12. Call to Action

For an SM or MM Optical TAP Coupler quotation or technical evaluation, please provide:

• Single-mode or multimode
• 1×2 or 2×4 configuration
• Operating wavelength
• Required tap ratio
• Main-line insertion-loss target
• Required isolation
• Fiber type
• Connector type
• Fiber length
• Package requirement
• Optical power
• Monitoring application