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  6. Fiber coupler

Fiber coupler

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last updated:Dec 18, 2025

キーストンインターナショナル
キーストンインターナショナル
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A fiber collimator manufactured by a company celebrating its 70th anniversary.

Schäfter + Kirchhoff's optical fiber products include components for single-mode, polarization-maintaining (PM), and multi-mode fiber cables, covering wavelengths from UV to IR. Our fiber couplers/collimators are equipped with focusing functions and are compatible with various connector types {including FC connectors FC/PC, FC/APC, ST, LSA (compatible with DIN, AVIO, or AVIM), and SMA-905 (F-SMA)}. We also offer non-magnetic couplers made of titanium. Schäfter + Kirchhoff was established in 1955 in Hamburg, Germany, starting with traditional lens design and customized optical solutions. Over time, the company gradually shifted its focus to today's core products, developing optomechanical and optoelectronic systems for various research and development fields, the aerospace industry, medicine, and industry for nearly 70 years. Our products are shipped worldwide from Hamburg and have received tremendous support in spectral and quantum experimental applications.

    Optical Measuring Instruments
60SMS.png

Fiber coupler

60SMS.png
60SMS.png 60SMS_Temperature, Power.png SUK_60SMS.png
  • Related Link - https://www.keystone-intl.co.jp/index.php?SUK_Fibe…
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basic information

Product Example 1) Model Number: 60SMS-1-4-A22-45 Focal Length: 22.0mm Lens Type: Aspherical Chromatic Correction: No AR Coating: 1300–1700nm Connector Type: FC/APC NA: 5.7mm Dimensions: Φ25.0mm Product Example 2) Model Number: 60SMF-LSA-4-M15-01 Focal Length: 15.0mm Lens Type: Achromat Chromatic Correction: Yes AR Coating: 400–700nm Connector Type: LSA/APC NA: 0.19mm Dimensions: Φ25.0mm Product Example 3) Model Number: 60FC-A19.5-0-M8-10 Focal Length: 8.0mm Lens Type: Monochromat Chromatic Correction: No AR Coating: 630–1080nm Connector Type: FC/PC NA: 0.25mm Dimensions: Φ25.0mm

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P3

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P4

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Spectroscopic experiment Quantum experiment applications

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キーストンインターナショナル

キーストンインターナショナル

Electronic Components and Semiconductors

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Our staff, equipped with specialized skills and marketing capabilities, searches for the latest cutting-edge equipment, including lasers, from around the world to provide to everyone in Japan. We wish to continue walking together with you into the 21st century. This is the wish of Keystone International.

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