THORLABS P5-SMF28E-FC-2 Fiber Cable

( Brand: Thorlabs ), ( Manufacturer Part Number: P5-SMF28E-FC-2 ), ( Part Type: Cable )

Review THORLABS Premium Quality Fiber Cable

The **Thorlabs P5-SMF28E-FC-2** is a high-performance, single-mode optical fiber cable designed for precision applications in laser systems, telecommunications, and scientific research. Engineered with meticulous attention to detail, this cable features a **Panda-style fiber core** (SMF-28E) that ensures minimal polarization mode dispersion (PMD) and excellent modal stability, making it ideal for demanding environments where signal integrity is paramount. The fiber itself is constructed from high-purity fused silica, providing outstanding transmission characteristics across a broad wavelength range, typically spanning from **1270 nm to 1650 nm**, with minimal attenuation and dispersion. This ensures reliable performance in both near-infrared and infrared applications, including fiber lasers, spectroscopy, and high-speed data transmission.

The cable is terminated with **FC/PC connectors** on both ends, which deliver a **low-reflection, high-precision** interface with a polished end-face finish (Physical Contact). These connectors are designed to minimize back reflections and signal loss, critical for maintaining signal fidelity in sensitive optical systems. The FC/PC design also offers durability and repeatability, ensuring consistent coupling efficiency during repeated connections and disconnections. To further enhance reliability, the connectors are gold-plated, reducing oxidation and improving electrical conductivity, which is particularly beneficial in high-power or high-frequency applications.

The **P5 series** designation indicates that this cable is part of Thorlabs premium-grade fiber offerings, characterized by **extra-low loss and superior mechanical strength**. The jacket is constructed from a **black, flame-retardant polyurethane** material, providing both durability and protection against environmental factors such as UV exposure, moisture, and abrasion. The cable s flexible yet robust construction allows for easy routing in tight spaces while maintaining structural integrity, even under repeated bending or tension. Additionally, the jacket is labeled with clear, permanent markings, including the fiber type, wavelength range, and part number, ensuring easy identification and traceability in complex optical setups.

Beyond its technical specifications, the **P5-SMF28E-FC-2** is engineered for ease of integration into existing systems. Its **2-meter length** strikes a balance between versatility and practicality, making it suitable for bench-top experiments, laboratory setups, or as a patch cord in fiber optic networks. The cable s design adheres to industry standards for single-mode fiber, ensuring compatibility with a wide range of lasers, amplifiers, and detectors without the need for additional adapters or modifications. Whether used in fiber-coupled diode lasers, optical parametric oscillators (OPOs), or high-precision metrology systems, this cable delivers consistent performance with minimal signal degradation, making it a trusted choice for professionals who demand both precision and reliability in their optical experiments.

**Pros and Cons of buying a Thorlabs P5-SMF28E-FC-2 Fiber Cable**

### **Pros**

1. **High Optical Performance** Thorlabs is a well-known manufacturer of precision optical components, and this cable is designed for low-loss transmission in single-mode fiber applications. The SMF28e specification ensures minimal signal degradation, making it suitable for high-precision experiments, telecommunications, or sensing systems.

2. **Durable and Reliable Construction** The cable features a robust jacket (likely polyurethane or similar) that resists abrasion, bending fatigue, and environmental factors like moisture and temperature fluctuations. The FC/PC connectors are known for their durability and consistent performance over repeated connections.

3. **Compatibility with Standard Equipment** The FC/PC connectors are industry-standard, meaning this cable will work seamlessly with most fiber optic devices, lasers, detectors, and splitters from major manufacturers (e.g., Thorlabs, Newport, Ocean Optics, etc.). This reduces the need for adapters or custom solutions.

4. **Flexibility and Ease of Handling** The cable length (5 meters in this case) provides enough slack for routing without being overly cumbersome. The SMF28e fiber has a moderate bend radius tolerance, allowing for some flexibility in installation while minimizing signal loss from excessive bending.

5. **Low Insertion Loss** FC/PC connectors are polished to a high precision, ensuring minimal back reflection and low insertion loss (typically

6. **Warranty and Support** Thorlabs offers warranties and technical support, which can be valuable if issues arise during use or if you need assistance with installation or troubleshooting.

7. **Versatility** The cable can be used in a wide range of applications, including laser delivery, fiber optic sensors, telecommunications, and laboratory setups requiring stable, low-loss transmission.

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### **Cons**

1. **Cost** Thorlabs products are premium-priced, and this cable may be more expensive than generic or no-name alternatives. For budget-sensitive applications, cheaper cables from other brands (e.g., Fiber Optic Center, Fiberstore) might suffice if performance requirements are not as stringent.

2. **Connector Durability Over Time** While FC/PC connectors are robust, repeated connections and disconnections can eventually lead to wear, especially if mated improperly (e.g., misalignment or excessive force). This could require periodic cleaning or replacement of connectors.

3. **Limited Customization** The cable comes in fixed lengths (5 meters in this case). If you need a different length, you may have to order a custom cable, which could increase cost or lead time. Additionally, the jacket color (likely black or gray) is standard and not customizable.

4. **Potential for Signal Loss at Connectors** Even with FC/PC connectors, improper polishing or contamination (e.g., dust, oil) can introduce additional loss. Users must ensure proper cleaning and handling to maintain performance.

5. **Bend Radius Limitations** While SMF28e fiber can handle moderate bending, excessive bending (e.g., sharp turns or tight loops) can cause microbending loss or even fiber breakage. This requires careful cable management during installation.

6. **Compatibility with Non-Standard Equipment** Some older or non-standard fiber optic devices may not accept FC/PC connectors, requiring adapters or alternative cables. Always verify compatibility before purchase.

7. **Environmental Sensitivity** While the jacket is durable, prolonged exposure to extreme temperatures, UV light, or chemicals (e.g., solvents) could degrade the cable over time. Proper storage and handling are necessary for longevity.

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### **Conclusion**

The **Thorlabs P5-SMF28E-FC-2** fiber cable is an excellent choice for applications requiring **high optical performance, reliability, and compatibility with standard fiber optic systems**. Its premium construction, low insertion loss, and durability make it ideal for laboratory, industrial, or telecommunications use where signal integrity is critical. However, the higher cost and potential need for careful handling may not justify its purchase for low-budget or non-critical applications.

If your requirements include **precision, long-term stability, and compatibility with high-end equipment**, this cable is a strong recommendation. For cost-sensitive or less demanding applications, a lower-cost alternative from a reputable manufacturer (while still ensuring SMF28e specifications and FC/PC connectors) may be sufficient.

- You need **minimal signal loss** and **high connector reliability**.

- Your setup requires **standard FC/PC compatibility** with other Thorlabs or industry-standard devices.

- You prioritize **durability and long-term performance** over cost savings.

- Budget is a major constraint, and you can verify that a lower-cost cable meets your loss and durability requirements.

- Your application involves **extreme environmental conditions** (e.g., high vibration, chemicals), where additional protective measures (e.g., armored cable) may be needed.

Details:

THORLABS P5-SMF28E-FC-2 PREMIUM QUALITY FIBER CABLE.

part #: p5smf28efc2 price

• $45.00

specifications linactuat:

• brand: Thorlabs
• mpn: P5-smf28e-fc-2
• part type: Cable

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• Industrial Automation Motion Controls > Rotary Linear Motion > Other Rotary Linear Motion

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• best offers: True
• started: March 4, 2026
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• city: Wabash, Indiana
• # reviews: 2711

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