What Coherent | Nufern does

Nufern, operating under the Coherent brand as Coherent | Nufern, is a specialty optical fiber manufacturer founded in 2000 and headquartered in East Granby, Connecticut. The company designs and produces engineered optical fibers across multiple application-specific product lines — including NuBEAM beam delivery fibers, NuPANDA polarization-maintaining fibers, NuMKW multi-kilowatt fibers, NuUF ultrafast fibers, and NuEYDF-SMR erbium/ytterbium-doped fibers for satellite communications and LIDAR — serving OEMs and system integrators in industrial laser manufacturing, medical laser systems, aerospace and defense photonics, and scientific research instrumentation. Its value proposition rests on proprietary rare-earth doping chemistries, polarization-maintaining waveguide geometries, and high-power coatings that customers qualify into laser architectures.

The business model is engineering-to-order B2B sales of specialty fiber components to laser OEMs and subsystem integrators, with revenue tied to per-fiber pricing on engineered SKUs rather than commodity telecom-grade volume. Customers qualify specific Nufern fiber geometries, mode-field diameters, and coating specifications into their platforms, which produces design-in lock-in and recurring volume orders once a fiber is approved for a given laser architecture.

Following its acquisition by Coherent Corp, Nufern operates as a sub-brand within Coherent's Photonics Segment. The 51-100 employee East Granby site contributes specialty-fiber manufacturing capacity, proprietary IP, and customer relationships to Coherent's broader portfolio, while Coherent provides global sales channels, semiconductor and materials-purchasing scale, and cross-sell opportunities across its laser-diode and photonics customer base. The unit's strategic significance to Coherent lies in vertical integration of the specialty fiber supply chain for industrial, medical, and aerospace laser systems, reducing dependency on third-party specialty fiber suppliers and supporting higher-margin integrated laser-module sales.

Name

Coherent | Nufern

Legal name

Coherent Corp.

Website

https://nufern.com

Company type

Public

Founded year

2000

Operating status

Operating

Headcount range

51–100 employees

Short description

Nufern, operating as Coherent | Nufern, designs and manufactures specialty optical fibers — including beam delivery, polarization-maintaining, multi-kilowatt, ultrafast, and EY-doped fibers — for laser OEMs in industrial, medical, aerospace/defense, and research applications.

Ownership category

akta.pro rank

Product category

Specialty Optical Fibers

NAICS

Fiber Optic Cable Manufacturing (335921)

SIC

Optical Instruments & Lenses (3827)

akta.pro primary industry

Fiber-Optic Interconnects (Connectors/Cables/Transceivers Interfaces) (HDAHAOAE)

akta.pro secondary industry

Data, Communications & Fiber Optic Cable (IMADAMAD)

Keywords

• Specialty optical fibers
• Fiber optic components
• Laser delivery fibers
• Polarization maintaining fibers
• Single mode optical fibers

Headquarters

HQ city

East Granby

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Specialty Optical Fiber Sales: Sale of specialty optical fibers including single-mode, multi-mode, polarization maintaining, and application-specific fibers. Products sold through direct sales and e-commerce channels to industrial, defense, medical, and communications equipment manufacturers.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Coherent | Nufern designs and manufactures specialty optical fibers including single-mode, multi-mode, and polarization maintaining variants for laser, amplifier, beam delivery, sensing, gyroscope, and medical applications. The unit sells proprietary fiber lines (NuBEAM, NuPANDA, NuMKW, NuUF, NuEYDF-SMR) and offers custom fabrication of fibers with specific core, cladding, dopant, and coating parameters. Products are sold to OEM customers in industrial laser, defense and aerospace, medical device, and communications markets via direct enterprise sales and an e-commerce storefront.

Product overview

Coherent offers a complete portfolio of specialty optical fibers organized across multiple product lines. The core offerings include Beam Delivery Fibers (NuBEAM), Laser and Amplifier Fibers, Multi-kW Fibers (NuMKW), Single-Mode Fibers, Multi-Mode Fibers, Polarization Maintaining Fibers (NuPANDA), Gyro Fibers for fiber optic gyroscopes, Geophysical Fibers for distributed sensing, Medical Fibers for surgical and imaging applications, SatCom and LIDAR Fibers (NuEYDF-SMR), and Ultrafast Fibers (NuUF). These specialty fibers span SM (single-mode), MM (multi-mode), and PM (polarization maintaining) types for applications including lasers and amplifiers, beam delivery, geophysical sensing, gyro, and medical uses.

Differentiator

Problem solved

Functional benefit

Brands

• NuBEAM: Low loss, high damage threshold, multi-mode beam delivery fibers for solid-state, fiber, and diode laser systems.
• NuMKW
• NuPANDA
• NuEYDF-SMR
• NuUF

Products and services

• Beam Delivery Fibers (NuBEAM) Low loss, high damage threshold, multi-mode beam delivery fibers that transmit higher powers in solid-state, fiber, and diode laser systems, with core diameters ranging from 50 µm to 1000 µm and top hat intensity profile options.
• Geophysical Fibers Distributed sensing fibers for temperature, pressure, flow, acoustics, or strain measurement in harsh environments, featuring specialty coatings for high strength and reliability at temperatures exceeding 300 °C, with pure silica cores and carbon coating options for high hermeticity.
• Gyro Fibers (FOG) High birefringence fibers for fiber optic gyroscope (FOG) coils and sensors for automotive, space, and defense applications, with radiation hardened varieties and low cross-talk variation from -55 °C to 105 °C.
• Laser and Amplifier Fibers Fibers designed to eliminate SRS and TMI, featuring high mode quality, excellent pump light absorption, and exceptionally low photodarkening for successful power scaling in demanding applications.
• Medical Fibers High-performance fibers for surgical, imaging, and spectroscopic systems, offered in many form factors and power handling capacities with optimized designs for intravenous applications and high signal-to-noise ratio for OCT.
• Multi-kW Fibers (NuMKW) Fibers designed for high power laser systems with low photodarkening, SRS, TMI and high beam quality, featuring high coupling efficiency with mode matched active and passive fibers.
• Single Mode Fibers Fibers that maintain beam quality, minimize attenuation and dispersion, offered from visible through infrared with operation at 350 nm to 2200 nm, available in various cutoff wavelengths and coatings.
• Multi-Mode Fibers Fibers supporting laser system components, laser beam delivery, material processing, surgery, spectroscopy, LiDAR, and metrology, with core diameters from 50 µm to 1000 µm and top hat intensity profile options.
• Polarization Maintaining Fibers (NuPANDA) PANDA design polarization maintaining fibers with the broadest operating wavelength range, highest birefringence, and highest mode field uniformity, featuring custom and precision beat length selection available from 350 nm to 2000 nm.
• SatCom and LIDAR Fibers (NuEYDF-SMR) Erbium-Ytterbium co-doped all-glass active single-mode and matched passive fibers designed for demanding LIDAR and satellite applications, with radiation resistance for space and HTA coating for high temperature automotive applications.
• Ultrafast Fibers (NuUF) Ultrafast fibers featuring polarization maintenance, dispersion control, high beam quality, lowest photodarkening, and highest absorption to minimize cavity length and nonlinear effects.

Quantifiable outcome

• Broad wavelength coverage from 350 nm to 2,200 nm across product lines

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Recent moves5 records

Expansion highlights4 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/nufern
• YouTubeyoutube.com/@CoherentCorp
• Facebookfacebook.com/CoherentCorp
• LinkedInlinkedin.com/company/coherent-corp
• Instagraminstagram.com/coherent_corp

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds1 record

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Coherent | Nufern