3x3 Port Polarization Maintaining Fused Taper Coupler
Kerns Technology is a premier manufacturer of polarization maintaining (PM) fiber optic components in China. We provide tailored selections matching your ideal features, specifications, and system needs. We can custom the 3x3 PM fused taper coupler you ordered.
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Product Description
Product Description
The Kerns Technology 3x3 Port Polarization Maintaining Fused Taper Coupler is a high-precision passive optical component engineered for polarization-sensitive multi-channel systems. Leveraging advanced fused taper technology and PM Panda Fiber (PM15-PR-U25A/SM15-PS-U25D), it enables stable 1-to-2 or multi-port light splitting/combining while preserving the polarization state of optical signals—critical for applications where polarization consistency directly impacts system performance.
Available in Grade P (premium) and Grade A (standard) configurations, this coupler supports multi-wavelength operation (1310/1480/1550/2000±15nm) with industry-leading specs: typical excess loss as low as 0.6dB (Grade P), extinction ratio up to 16dB, and 2W power handling capacity. Its compact φ3.0×54mm package and wide temperature range (-40~+85°C) ensure seamless integration and reliable operation in harsh industrial or laboratory environments.
Product Features
1. 3x3 Multi-Port Flexibility
Delivers 1-to-2 or symmetric/asymmetric light distribution across 3 input/output ports, eliminating the need for cascaded 1×2 couplers and simplifying complex system architectures.
2. Superior Polarization Preservation
High extinction ratio (16dB for Grade P) minimizes polarization crosstalk, ensuring the integrity of polarization-encoded signals in EDFAs, pump lasers, and optical lithography systems.
3. Multi-Wavelength Compatibility
Supports 1310/1480/1550/2000nm bands (±15nm tolerance), adapting to diverse telecom, industrial, and R&D wavelength requirements.
4. Low Loss & High Uniformity
Grade P offers ≤0.6dB typical excess loss and 1.6dB uniformity, ensuring consistent power distribution across all ports and maximizing signal efficiency.
5. Robust & Customizable Design
Compact φ3.0×54mm package for space-constrained setups
Supports PM fiber types, pigtail lengths (0.5m~2m), and connector options (FC/UPC, SC/APC, etc.)
Withstands -40~+85°C operating temperatures for outdoor/industrial deployment
Product Applications
This 3x3 PM fused taper coupler is ideal for:
EDFA (Erbium-Doped Fiber Amplifiers): Splits/combines pump light and signal light to enhance amplification efficiency.
Pump Laser Systems: Distributes high-power pump light across multiple channels in fiber optic networks.
Optical Lithography Equipment: Provides stable polarization-preserving signal splitting for high-precision patterning.
Research Laboratories: Enables polarization-sensitive experiments in optical physics, fiber sensing, and quantum optics.
Telecom Backhaul Networks: Supports multi-channel signal distribution in polarization-maintaining optical links.
Grade P vs. Grade A Performance Comparison
| Parameter | Unit | Grade P (Premium) | Grade A (Standard) |
|---|---|---|---|
| Typical Excess Loss | dB | ≤0.6 | ≤0.8 |
| Maximum Excess Loss | dB | ≤0.8 | ≤1.0 |
| Extinction Ratio | dB | 16 | 14 |
| Insertion Loss | dB | ≤6.0 | ≤6.0 |
| Uniformity | dB | 1.6 | 1.6 |
| Power Handling | W | 2 | 2 |
| Operating Temperature | °C | -40~+85 | -40~+85 |
FAQs
Q1: How does connector installation affect performance?
A1: When factory-installed connectors are added, insertion loss increases by 0.3dB and extinction ratio decreases by 2dB. We align connector keys with the PM fiber slow axis to minimize polarization degradation.
Q2: Can the splitting ratio be customized for asymmetric port needs?
A2: Yes. We offer both symmetric (e.g., 33/33/34) and custom asymmetric splitting ratios (e.g., 20/40/40) to match your system’s power distribution requirements.
Q3: What PM fiber types are compatible with this coupler?
A3: The default fiber types are PM15-PR-U25A and SM15-PS-U25D; we also support other PM fiber specifications (e.g., PM980, PM1310) for system compatibility.
Q4: Is this coupler suitable for high-power applications?
A4: It supports 2W continuous-wave power handling, which meets the needs of most pump lasers and EDFA systems. For higher-power requirements, we can provide customized high-power configurations.
