Tutorials

Read Fiber Optic Testing Tutorials. 

Read Fiber Optic Testing Tutorials. 

Complete Guide for Testing MTP/MPO Fiber Optic Cables

A complete guide to testing MTP/MPO Fiber Optic Cables.  Learn various test setups, troubleshooting methods and tips, plus, what to expect in the process.

Optical Loopback Testing Tutorial

Testing your fiber optic loopback component for Attenuation, Bit Error Rate (BER) and OTDR link testing helps you make a high quality product that performs as expected and meets your customers needs perfectly. In this tutorial slideshow with illustrations we cover the background, structure, usage for transceiver and other optical products testing and how to test your optical loopback product.

What is Insertion Loss?

This Fiber Optical Insertion Loss tutorial walks you through What insertion loss is. Where it comes from, and explains Single mode, Multimode fibers, and Launch conditions in multimode fiber.

Graded Index Fiber vs. Step Index Fiber

Why use Graded Index Multimode Fiber?   Multimode Fiber Profiles: Step Index vs. Graded Index There are mainly two types of multimode fibers: Step Index and Graded Index fibers The core on a step index fiber has the same refractive index throughout. The refractive index on a graded index fiber gradually changes from the center […]

The Importance of Calibration

With any fiber optic measurement instrument or tool used to qualify product, it is mandatory that the tool or instrument be 100% functional and measure per the appropriate specifications when used. A manufacturer’s calibration can perform both functions. Know the risks of internal and self-calibrations and why a full calibration performed by a professional would be needed.

How You Accurately Test Performance of Hybrid Cables Tutorial

Hybrid cables makes them ideal as a way to link otherwise incompatible infrastructure in existing fiber systems applications. In this tutorial we address the challenge of mating the different connectors of the hybrid cable to the reference cables and detectors used to measure IL and RL.

Switches, Lossy Components, and the Need for External Reflectance Standards

This article focuses on RL measurement setups that are prone to introducing testing errors. Ways to mitigate these errors are discussed. Some errors are unavoidable; therefore, steps for correcting them out or reducing them are also described here.

Industry Update – Visual Inspection Standard

A recent update to IEC 61300-3-35 (Fiber optic connector endface visual and automated inspection) is moving forward with the intention to modernize inspection practices and provide more uniform results industrywide. The updates aim to accomplish three things: Link visual inspection results to optical performance Make results more uniform between manual (visual) and automated (software) platforms […]

Ensuring Accurate Return Loss Measurements

OptoTest equipment provides the most accurate Return Loss measurements in the industry. In this presentation you will learn more about the elements that make that possible and things to keep in mind to ensure optimal performance. Ensuring Accurate Return Loss Measurements 

Launch Conditions for Multimode Testing

Explore the effect that different launch conditions, including Encircled Flux, have on Insertion Loss and Return Loss testing of multimode cables. Launch Conditions for Multimode Testing 

How to Save Time When Testing Multiple Cable Types

Changing out reference cables during the insertion loss and return loss testing process to accommodate new DUT types can cause downtime for a manufacturing line and drastically reduce the efficiency of the cable production process. With single channel DUTs and reference cables, the issue may seem inconsequential. However, in the modern fiber production line every […]

Preventing Damage to Optical Connectors

As the most common and most preventable source of error in fiber optic test systems, learn the tips and tricks for preventing damage to maintain the performance quality and longevity of optical connectors. Preventing Damage to Optical Connectors 

Troubleshooting

If, in the course of testing, an OptoTest unit begins to experience issues, please consult the below table for basic troubleshooting help. If after consulting the table the unit is still having issues, please contact OptoTest for further assistance.

Mode Field Diameter Tutorial

 Mode Field Diameter results and test report demonstration with OptoTest OPL-LCA Software.

What is MFD? 

An overview of Mode Field Diameter and its importance in the development and qualification of single mode fiber. Mode Field Diameter Overview RELATED PRODUCTS OP940 Optical Return Loss Meter and Insertion Loss MeterView ProductOP940-SW Multi-channel Optical Return Loss MeterView ProductFiber Connector Cleaning ToolsView ProductSAVer CablesView ProductHPR High Performance Reference Cables SimplexView ProductHigh Performance Reference MTP/MPO [...]

Standards Cheat Sheet

OptoTest Standards Cheat Sheet Insertion Loss Measurement Procedures FOTP-171 FOTP-171 was rewritten to include EF for all methods.  It still includes overfilled launch conditions, and the mode filter launch conditions as alternatives.Method A:  Single cable reference. Method B: Two cable method, with a recommendation to measure multimode cabling in two directions by swapping the ends. Method […]

Achieving Low Return Loss on LC-PC Cables

Achieving Low Return Loss on LC-PC Cables PC (physical contact) and UPC (ultra-physical contact) Connectors are required to have Return Loss values at 55dB or better, and these optimal Return Loss results are achieved through a refined recipe in the polishing process.  For most single mode connectors, including SC and FC, reaching 55dBRL or better […]

Mtp feature image
Complete Guide for Testing MTP/MPO Fiber Optic Cables

A complete guide to testing MTP/MPO Fiber Optic Cables.  Learn various test setups, troubleshooting methods and tips, plus, what to expect in the process.

Optical Loopback Illustration of Duplex LC and MTP
Optical Loopback Testing Tutorial

Testing your fiber optic loopback component for Attenuation, Bit Error Rate (BER) and OTDR link testing helps you make a high quality product that performs as expected and meets your customers needs perfectly. In this tutorial slideshow with illustrations we cover the background, structure, usage for transceiver and other optical products testing and how to test your optical loopback product.

Insertion Loss feature image
What is Insertion Loss?

This Fiber Optical Insertion Loss tutorial walks you through What insertion loss is. Where it comes from, and explains Single mode, Multimode fibers, and Launch conditions in multimode fiber.

Step vs Graded Index Fiber image
Graded Index Fiber vs. Step Index Fiber

Why use Graded Index Multimode Fiber?   Multimode Fiber Profiles: Step Index vs. Graded Index There are mainly two types of multimode fibers: Step Index and Graded Index fibers The core on a step index fiber has the same refractive index throughout. The refractive index on a graded index fiber gradually changes from the center […]

IMG 6076 scaled
The Importance of Calibration

With any fiber optic measurement instrument or tool used to qualify product, it is mandatory that the tool or instrument be 100% functional and measure per the appropriate specifications when used. A manufacturer’s calibration can perform both functions. Know the risks of internal and self-calibrations and why a full calibration performed by a professional would be needed.

AN117 Figure 6B
How You Accurately Test Performance of Hybrid Cables Tutorial

Hybrid cables makes them ideal as a way to link otherwise incompatible infrastructure in existing fiber systems applications. In this tutorial we address the challenge of mating the different connectors of the hybrid cable to the reference cables and detectors used to measure IL and RL.

OptoTest Equipment
Switches, Lossy Components, and the Need for External Reflectance Standards

This article focuses on RL measurement setups that are prone to introducing testing errors. Ways to mitigate these errors are discussed. Some errors are unavoidable; therefore, steps for correcting them out or reducing them are also described here.

image of Fiber with scratches near the core
Industry Update – Visual Inspection Standard

A recent update to IEC 61300-3-35 (Fiber optic connector endface visual and automated inspection) is moving forward with the intention to modernize inspection practices and provide more uniform results industrywide. The updates aim to accomplish three things: Link visual inspection results to optical performance Make results more uniform between manual (visual) and automated (software) platforms […]

Ensuring Accurate Return Loss Measurements presentation image
Ensuring Accurate Return Loss Measurements

OptoTest equipment provides the most accurate Return Loss measurements in the industry. In this presentation you will learn more about the elements that make that possible and things to keep in mind to ensure optimal performance. Ensuring Accurate Return Loss Measurements 

power point image of LaunchConditions For Multimode Testing presentation
Launch Conditions for Multimode Testing

Explore the effect that different launch conditions, including Encircled Flux, have on Insertion Loss and Return Loss testing of multimode cables. Launch Conditions for Multimode Testing 

Figure 1: An OP940 insertion and return loss meter with multiple reference cables: MTP, LC Duplex, SC, and FC connectors. image
How to Save Time When Testing Multiple Cable Types

Changing out reference cables during the insertion loss and return loss testing process to accommodate new DUT types can cause downtime for a manufacturing line and drastically reduce the efficiency of the cable production process. With single channel DUTs and reference cables, the issue may seem inconsequential. However, in the modern fiber production line every […]

Preventing Damage to Optical Connectors powerpoint image
Preventing Damage to Optical Connectors

As the most common and most preventable source of error in fiber optic test systems, learn the tips and tricks for preventing damage to maintain the performance quality and longevity of optical connectors. Preventing Damage to Optical Connectors 

Fiber Optic Insertion Loss icon drawing
Troubleshooting

If, in the course of testing, an OptoTest unit begins to experience issues, please consult the below table for basic troubleshooting help. If after consulting the table the unit is still having issues, please contact OptoTest for further assistance.

mode field diameter tutorial video image
Mode Field Diameter Tutorial

 Mode Field Diameter results and test report demonstration with OptoTest OPL-LCA Software.

Standards Cheat sheet screenshot image
Standards Cheat Sheet

OptoTest Standards Cheat Sheet Insertion Loss Measurement Procedures FOTP-171 FOTP-171 was rewritten to include EF for all methods.  It still includes overfilled launch conditions, and the mode filter launch conditions as alternatives.Method A:  Single cable reference. Method B: Two cable method, with a recommendation to measure multimode cabling in two directions by swapping the ends. Method […]

AN117 Figure 1
Achieving Low Return Loss on LC-PC Cables

Achieving Low Return Loss on LC-PC Cables PC (physical contact) and UPC (ultra-physical contact) Connectors are required to have Return Loss values at 55dB or better, and these optimal Return Loss results are achieved through a refined recipe in the polishing process.  For most single mode connectors, including SC and FC, reaching 55dBRL or better […]