Attenuating Mono Fiber-optic Patch Cords

Attenuating Mono Fiber-optic Patch Cords
  • Unit price per 

Ordering Code:
  • Fiber-optic patch cords with an integrated attenuating filter are ideal for applications where optical power coupled into a fiber is too high, i.e. fiber photometry excitation. Addition of attenuating filter does not affect light distribution inside the optical fiber, only transmission is reduced. Different optical fibers or attenuating factors are possible.


    • For attenuating patch cords, optical transmission is specified for visible light, and measured at a 465 nm wavelength. Please note that for a 405 nm wavelength (UV), the transmission value is about half of the specification for visible light.
    • Other fiber-optic lengths and jackets are available¬†on custom request.
    • An attenuating filter can also be integrated to Branching Fiber-optic Patch cords on custom request.¬†

     Comparison Table : Patch cord Optical Fiber Type
    Fiber-optic Material Borosilicate Silica/Silica Silica/Polymer Plastic
     Core Glass Glass Glass Plastic
     Cladding Glass Glass Polymer Polymer
     Numerical Aperture 0.66 0.22 - 0.37 0.48 - 0.57 0.50 - 0.63
     Flexibility Poor Good Good Excellent
     Auto-Fluorescence Good Excellent Good Poor
     Fiber Photometry N/A
    (too fragile)
    Good* Good* Not recommended
    (high AF)
     Optogenetics LED Source N/A
    (too fragile)
    Not recommended
    (low NA)
    Good BEST
     Optogenetics Laser Source N/A
    (too fragile)
    BEST Good Good

  • Optical Transmission 1 %, 2 %, 5 %, 10 % @ 465 nm

  • Core
    Buffer NA Fiber-optic Code*
    200 220 240 0.22 200/220/XXX-0.22
    200 220 245 0.37 200/220/XXX-0.37
    200 230 500 0.48 200/230/XXX-0.48
    400 430 730 0.48 400/430/XXX-0.48
    400 440 470 0.37 400/440/XXX-0.37
    400 440 480 0.22 400/440/XXX-0.22
    *XXX is representative of the jacket code, see the JACKETS CODE tab to choose the best one for your needs
  • ¬†Comparison Table : Protective Jacket
    Composition  Code Description Color OD
    Linear mass
    Flexibility Fiber break protection Fiber pull protection Proposed usage
    LWMJ Stainless monocoil with PVC 2.4 mm Black 2.4 7.5 Good
    Good Freely-moving animal light delivery with large mice or rat
    Stainless monocoil with kevlar and PUR 3.0 mm
    Black 3.0 11 Good
    Excellent Best compromise between flexibility and robustness
    ARBK Stainless armor with PVC 3 mm Black 3.0 15 Low Excellent Excellent Preferred for maximum robustness

    Jacket availability may vary with optical fibre type

  • Code Description Image Drawings
    FCM FC Connector with Metal Ferrule
    SMA SMA Connector with Metal Ferrule
  • Drawing

    Attenuating Patch Cord