150–200°C TARGET ENVIRONMENTS

Medium-Temperature Optical Fiber Coating System

The 2916 / 3520 dual-layer route is evaluated around the intended temperature profile, exposure duration, atmosphere, coating process and post-exposure retention requirements.

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APPLICATION EVALUATION

Start with the complete manufacturing requirement.

Target temperature, duration and cycling profile
Atmosphere, pressure and chemical exposure
Coating dimensions and processing conditions
Post-exposure optical, mechanical and coating-integrity tests

The 150–200°C range identifies a target evaluation environment, not a continuous-service rating. Qualification must use the intended fiber, process and exposure profile.

FREE APPLICATION WORKSHEET

Fiber Coating Application Brief

Define the fiber structure, coating layers, draw and cure process, optical conditions, environment and qualification plan.

Download coating brief (PDF)2-page printable engineering worksheet

Medium-temperature coating

Medium-Temperature Fiber Coating System

2916 · 3520

A dual-layer coating route for application-specific evaluation in medium-temperature optical-fiber environments. The target range is not a continuous-service rating.

Evaluation focus

Thermal-aging evaluation
Crack-resistance evaluation
Low-stress primary protection

Medium-temperature primary coating

2916

Medium-temperature outer coating

3520

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RELATED TECHNICAL GUIDES

Plan the application before comparing materials.

How to Qualify Optical Fiber Coatings for 150–200°C EnvironmentsPlan qualification of a dual-layer optical fiber coating for a 150–200°C target environment by duration, atmosphere, cycling, process and post-exposure retention tests.Read the guide

TECHNICAL FAQ

Questions for application planning

Does 150–200°C mean continuous service at every temperature in that range?

No. Define the actual temperature, duration, cycling and atmosphere, then qualify the finished coated fiber for that profile.

What should be measured after thermal exposure?

Use application-relevant optical, mechanical, adhesion, crack, color and coating-integrity checks with defined baselines and recovery conditions.

Is this the same material route as PI-250?

No. 2916 / 3520 is a dual-layer coating system, while PI-250 is a polyimide coating route with different processing requirements.