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Large Core Fiber Optic Rotary Joints

For special applications, SPINNER supplies fiber optic rotary joints with large core fibers (LCFs) or plastic optical fibers (POFs). These enable genuinely bidirectional transmission across the rotary interface.

Their extremely low torque and robust housings make them ideally suited for a wide spectrum of applications in fields ranging from the life sciences and medical technology all the way to machine tools and construction vehicles. Many medical applications in particular – examples include Raman spectroscopy and fluorescent imaging – require mixed rotary couplings with a laser channel for stimulation and a large-core channel for the backscatter signal.

Technical Properties

The LCF and POF rotary joints deliver optimal optical performance from blue across green to red wavelengths, thus in the range from about 400 to 800 nanometers. They are therefore also ideal for photometry. At the same time, the individual channels are exceptionally well isolated from one another. Each channel can be used in either or both directions, thus enabling directional multiplexing.

Depending on the fibers’ core diameters, up to four channels can be integrated in a single rotary joint. We naturally also offer various single-channel solutions. The outputs are terminated with FSMA or FC connectors, and the cable lengths can be adjusted to meet customer specifications.

Benefits of the SPINNER LCF and POF Rotary Joints

No maintenance required
No degradation, since the coupling contains air instead of oil
2 to 4 channels
High rotational speeds of at least 12,000 rpm, on request even faster
Robust housings able to withstand high mechanical stresses

We’re happy to configure customized solutions on request, also in small quantities. Please don’t hesitate to contact us by email rs@spinner-group.com or phone +49 89 12601-1430.

Applications

FORJ Configurator

Configure your customized fiber optic rotary joint from all possible combinations and features and request a quote!

Fiber Optics - From Single Channel up to 109 Channels!

Single Channel Fiber Optics

Ø 6,8 mm/14 mm/17 mm
(Type 1.068/1.14/1.17)

The single-channel fiber-optic rotary couplings of SPINNER feature maximum performance in a minimum of space. It comes in three different standard versions as well as customized solutions.

2 to 4 Channel Fiber Optics

Ø 25 mm (Type x.25)

The mechanical design of the FORJ x.25, which is available with 2, 3 or 4 channels, makes this fibre optic rotary joint very compact. Also available as L-form!

3 to 8 Channel Fiber Optics

Ø 40 mm (Type x.40)

The SPINNER FORJ x.40 delivers market-leading compactness for multi-channel solutions with up to eight channels, with an outer housing diameter of only 39.5 mm.

7 to 109 Channel Fiber Optics

Ø 60 mm (Type x.60)

Ideal for multi-channel applications. These rotary joints cover the full range from seven up to 109 channels.

Pressure Compensated - Subsea Type

Ø 17 mm/65 mm
(Type 1.17pc/x.65pc)

The pressure compensated FORJs are designed for the use in deepsea and withstands brutal vibrations, high humidity, and seawater.

Large Core Fiber Optic

For special applications, e.g. life sciences and medical technology, SPINNER supplies fiber optic rotary joints with large core fibers or plastic optical fibers.