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News
Latest News
21 October 2026
Day of Photonics 2026

Today, 21 October, is the Day of Photonics. The date marks the day in 1983 when the General Conference on Weights and Measures fixed the speed of light at exactly 299,792,458 m/s. The European Photonics Industry Consortium (EPIC) started the Day of Photonics in 2014 to make the field more visible outside labs and companies. […]

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20 October 2026
Flexible CO₂ laser delivery at 10.6 µm: PIR fibers vs hollow waveguides

art photonics Technical Note 007 Both polycrystalline silver halide fibers (PIR) and hollow waveguides (HWG) from art photonics transmit up to 85–90 % of CO₂ laser radiation (10.6 µm) through a 1 m high-power cable. Choose a PIR fiber when the cable must bend, move or run long distances: a full 360° loop costs only […]

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Latest Events
30 October 2026
EAS 2026 | 16-18 November 2026 | Crowne Plaza Princeton Conference Center, Plainsboro, NJ, USA

Our CEO, Dr. Stefanie Foerster, will represent art photonics GmbH at the Eastern Analytical Symposium & Exposition (EAS 2026), taking place 16–18 November 2026 at the Crowne Plaza Princeton Conference Center in Plainsboro, New Jersey. During the show, Stefanie will join our close partner M Yusuf at the Situs Light booth, #L1. From Laboratory Analysis […]

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13 October 2026
analytica China 2026 | 16-18 November 2026 | Shanghai New International Expo Centre (SNIEC), China

art photonics will be represented at analytica China 2026 in Shanghai from 16 to 18 November 2026. Together with our local distribution partner, UniqueRay Technologies Limited (Uray), we will be presenting our specialty fiber-optic solutions for inline Process Analytical Technology (PAT) and laboratory spectroscopy at Booth # E6.6920. At art photonics, we design and manufacture […]

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About Our Company
art photonics GmbH, founded in Berlin in September 1998, is one of the worldwide leaders in development and production of specialty fiber products for a broad spectrum from 300 nm to 16 µm. Unique technologies of Polycrystalline Mid InfraRed (PIR-) fibers and Metal coated Silica fibers are used for assembly of various spectroscopy probes for medical diagnostics and industrial process control, in volume production of fiber for medical and industrial lasers, for different fiber bundles, etc. Since January 2024 art photonics GmbH is a member of NYNOMIC GROUP.
Member Of:
UV 200-400 nm
Visible
Near IR 750-2500 nm
Mid IR 2.5 - 18 µm

Fiber Couplers for LN Cooled MCT Detector

Main features:

  • Efficient coupling of fiber cable to MCT/ InSb detector  in side window Dewar  
  • Wide-range operation thanks to Mirror optics
  • Price effective Lens optic version 
  • Pre-aligned and adjustable  for maximum coupling efficiency
  • SMA or FC/PC  adaptor for fiber (Chalcogenide and Polycrystalline)  optical cable

Description

Refocusing couplers are designed  for  easy coupling of  mid-IR fiber optical cables to MCT/ InSb detector  in LN-cooled side window Dewar.   Art photonics  presents two versions:  Lens Refocusing- and Mirror Refocusing coupler.

The simplest Lens  version coupler can be  standard or customized. Adjustable in 3 dimensions - X-Y for the lens and Z - for the connector position.

Advanced version of the coupler is based on pre-aligned parabolic mirrors. This version serves to eliminate chromatic aberrations and has purging option to avoid atmospheric disturbance in spectral details of the object.  Adjustable in 3 dimensions - X-Y for the mirror and Z - translation of the Dewar.

Both couplers have SMA or FC/PC (on request) adaptor for  fiber optical cable.

See product pages of  our Chalcogenide and Polycrystalline Fiber cables for different spectral range detectors and radiation sources.

For more information please visit our “Downloads” section and find relative articles at our “Publications” page.

Specs

Specification of Dewar Couplers
Coupler Type Lens coupler Mirror coupler
Optic elements ZnSe lens with 3-5 or 8-12μm AR-coating Two parabolic mirrors
Dimensions Diameter 70 mm Length 61 mm 157*148*101mm, space for Dewar and pre-amplifier included
Alignment options Angular translation stage ±2.5° in both orthogonal axes; Z-alignment ± 5mm X-Y alignment of the mirror inside the coupler, Z-alignment - translation of the Dewar.
Other options Purging is possible

Downloads

Graphs

Applications

  • Mid IR spectroscopy
  • Flexible IR pyrometry
  • Flexible IR-Imaging systems

Inquiry

Do you have any questions about this or any other product? Send us an inquiry, and our personnel will answer your question as soon as possible.

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