Specialty Optical Fibers
Choose from an extensive catalog of SM, MM, and PM fiber for lasers and amplifiers, beam delivery, geophysical sensing, gyro, and medical applications.
- Extensive Product Portfolio Select from many fiber compositions, geometries, and coatings.
- Highest Reliability Build better systems with proven, time tested fiber designs
- Industry Innovators Enhance your system performance and scalability using our superior technology.

Optical Fibers for Most Applications
Coherent offers a complete range of specialty optical fibers, with a broad selection of standard products, and the expertise and capabilities to fabricate custom items having specific core, cladding, dopant, and other mechanical and optical parameters.
Specialty Optical Fibers Product Family
![]() Coherent NuBEAM are low loss, high damage threshold, multi-mode, beam delivery fibers that transmit higher powers in solid-state, fiber, and diode lasers systems. |
Broad Wavelength Spectrum - Visible to Infrared. | Unique Capabilities - Includes top hat intensity profile fibers. | Highest Power Applications - Core diameters ranging from 50 µm to 1000 µm |
![]() Distributed sensing fibers for temperature, pressure, flow, acoustics, or strain, that operate even in harsh environments with superior optical performance. |
Ruggedized - Specialty coatings for high strength and reliability at temperatures >300 °C | Sense More - High bandwidth, graded index fibers for highly resolved distributed sensing. | Sealed to Last - Pure silica cores and carbon coating options provide high levels of hermeticity. |
![]() Build high-performance fiber optic gyroscope (FOG) coils, plus sensors for auto, space, and defense applications, with these high birefringence fibers. |
Positioned for Success - Extremely high birefringence ensures minimal gyroscope drift. | Space Ready - Radiation hardened and radiation resistant varieties available. | Reliable Performance - Low Tg coating for low cross-talk variation from -55 °C to 105 °C temperature ranges. |
![]() Coherent Laser and Amplifier Fibers eliminate SRS and TMI, and feature high mode quality, excellent pump light absorption, and exceptionally low photodarkening. |
No Limits - Eliminate TMI and SRS for successful power scaling. | Focused on Quality - Near diffraction limited beam quality. | Built Tough - Enhanced fiber reliability in demanding applications. |
![]() Construct high-performance surgical, imaging, and spectroscopic systems with Coherent Medical Fibers, offered in many form factors and power handling capacities. |
A Cut Above - Optimized fibers for intravenous applications. | Increased Sensitivity - High signal to noise ratio for OCT and other applications. | Keep it Clean - Pure silica core for radiation sterilization. |
![]() Coherent NuMKW fibers are designed for high power laser systems, offering unmatched performance through lowest photodarkening, SRS, TMI and highest beam quality. |
Power Up - Lowest photodarkening for high power applications. | Connect Effectively - High coupling efficiency with mode matched active and passive fibers. | Proven Reliability - Designed for extended life in challenging deployment conditions. |
![]() Coherent Single Mode Fibers maintain beam quality, and minimize attenuation and dispersion, and are offered from the visible through the infrared. |
Broad Wavelength Range - Choose fibers for operation at 350 nm to 2,200 nm ultraviolet to 2.2 µm. | Select Cutoff - Choose from a wide range of cutoff wavelengths. | Range of Coatings - Select from acrylate, polyimide and more. |
![]() Coherent Multi-Mode Fibers support laser system components, laser beam delivery, material processing, surgery, spectroscopy, LiDAR, metrology, and more. |
We Deliver - Transfer more laser power to your process with minimal attenuation. | Homogenize Beam Profiles - Includes top hat intensity profile fibers. | Core Choices - Diameters from 50 μm to 1000 μm. |
![]() Coherent NuPANDA fibers are polarization maintaining fibers with the broadest operating wavelength range, highest birefringence and highest mode field uniformity. |
PANDA Designs - For the broadest operating wavelength range, highest birefringence,fh and highest mode field uniformity. | Can't be Beat - Custom and precision beat length selection available. | Wavelength Choices - From 350 nm to 2000 nm. |
![]() NuEYDF-SMR Erbium-Ytterbium co-doped all-glass active single-mode and matched passive fibers are designed for demanding LIDAR and satellite applications. |
Harsh Environment - Radiation resistance for space applications. | Beat the Heat - HTA coating allows for use in high temperature automotive applications. | High Efficiency - NuEYDF-SMR fibers inhibit parasitic 1 µm ASE. |
![]() Coherent NuUF Ultrafast Fibers feature polarization maintenance, dispersion control, high beam quality, the lowest photodarkening, and highest absorption. |
Increased Reliability - Lowest photodarkening for effective power scaling. | Superior Quality - Maintaining highest beam quality. | Maximum Efficiency - Highest absorption minimizes cavity length and nonlinear effects. |

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