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RGB Combiner

  • Combine 488 nm, 535 nm, and 640 nm Light
  • Three FC/PC Input Bulkhead Connectors with 2.2 mm Wide Keys
  • 1 m of Single Mode Fiber Output with FC/PC Connector and 2.0 mm Narrow Key


Related Items

Input Wavelengths488 nm, 535 nm, and 640 nm
Bandwidth10 nm (at each input wavelength)
Insertion Loss (Max)a, b3.6 dB
Max PDL<0.2 dB
Damage Thresholda500 mW (CW)
Operating Temperature0 to 60 °C
Storage Temperature-40 to 85 °C
Output Fiber Type460HP
Output Fiber Length1 m ± 10%
Output Fiber ConnectorFC/PC, 2.0 mm Narrow Key
Fiber InputsFC/PC, 2.2 mm Wide Key
  • For Each Leg
  • Measured without Connectors

The RGB1-FC combines three fiber inputs into one output beam. The combiner has FC/PC inputs for red (640 ± 5 nm), green (535 ± 5 nm), and blue (488 ± 5 nm) lasers and couples the combined output into a single mode fiber with a Ø3 mm jacket. RGB combiners are often used to illuminate multiple fluorophores in confocal microscopy (and produces images similar to those shown above), which can save space compared to using a more traditional free-space illumination method.

For other connector options and wavelength combinations, please contact Technical Support.


Fiber Specifications
Fiber Type460HP
Mode Field Diameter3.5 ± 0.5 µm (@ 515 nm)
CladdingØ125 ± 1.5 µm
CoatingØ245 ± 15 µm
Cutoff Wavelength430 ± 20 nm

Alternative Fiber Coupler Options

Single Mode CouplersMultimode CouplersPolarization-Maintaining CouplersRGB Combiner
2x21x4Graded-Index 1x2Step-Index 2x21x22x2
Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part Number Product Description
RGB1-FC Support Documentation RGB1-FC : 3-Channel Visible Laser Combiner

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Posted Comments:
Poster: linh.nguyen01
Posted Date: 2013-07-22 02:29:40.437
Would it be possible to use a FC/APC connector to the RGB FC/PC input port? I have a laser whose fibre pigtail is APC type.
Poster: antony.galea
Posted Date: 2013-02-15 03:17:02.047
Other wavelengths would be of interest, even if the coupling was lossy. Wavelengths I work with include 473, 488, 532, 635 & 670nm - 4 of these are provided by an MCLS-1. The lower wavelengths are of the greater interest.
Poster: cdaly
Posted Date: 2013-02-20 16:06:00.0
Response from Chris at Thorlabs: Thank you for using our web feedback. We may be able to provide an RGB combiner with a custom wavelength configuration for you. I will contact you directly to discuss this further.
Poster: tcohen
Posted Date: 2012-07-05 14:41:00.0
Response from Tim at Thorlabs: Thank you for your interest in our RGB combiners! We do have plans to expand our offering to other wavelengths in the future. I will contact you to address your immediate needs.
Poster: cbrideau
Posted Date: 2012-06-29 20:22:13.0
Would it be possible to get this for 405, 488, and 638nm, coupling into your new S405-XP 400-680nm single mode fiber? I am interested in potentially using this module with your MCLS1 4 channel laser diode source.
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Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
RGB1-FC Support Documentation
RGB1-FC 3-Channel Visible Laser Combiner
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