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In-Line Tunable Filters


Applications Include Test, R&D, and Communications


  • 1-Cavity, 2-Cavity, and 3-Cavity Designs

    • Depending on your transmission type

  • Very Stable Over Time and Temperature

    • Advanced YAG welding techniques lead to very good alignment characteristics over time

  • Both Fixed and Adjustable are Available

    • Adjustability range > 10 nm

  • Low Insertion Loss

    • Losses are from 1-1.5 dB for fixed filters and 1.5-2 dB for tunable filters (depending on the specific filter)

  • Good Return Loss

    • >45 dB for both fixed and adjustable filter series

In-line Tunable Filters





Specifications for In-Line Tunable Filters

In-Line Adjustable Filters
Model Cavities Range Setability Insertion
Loss
Return
Loss
FWHM
FB-PF-1560B-1-1-X-Y-Z 1 >10 nm ~100 pm <1.9 dB >45 dB 1 nm
FB-PF-1560B-1-3-X-Y-Z 1 >10 nm ~100 pm <1.4 dB >45 dB 3 nm
FB-PF-1560B-2-5-X-Y-Z 2 >10 nm ~100 pm <1.4 dB >45 dB 5 nm
FB-PF-ccccB-1-c-X-Y-Z 1 >10 nm ~100 pm Filter Dependent >45 dB User Specified
FB-PF-ccccB-2-c-X-Y-Z 2 >10 nm ~100 pm Filter Dependent >45 dB User Specified
FB-PF-ccccB-3-c-X-Y-Z 3 >10 nm ~100 pm Filter Dependent >45 dB User Specified




Ordering Information for In-Line Tunable Filters

Note that two parts are necessary to make a useable exchangeable filter.  Specifications are needed for both the collimator bed (TFM) and the filter cartridge.

  • In-Line Adjustable Filter (FB-PF) Ordering Protocol

    Use the following definitions to specify the in-line adjustable filter (FB-PF).
    FB-PF-nnnnB-c-w-x-y-z (Example: FB-PF-1560B-1-1-S-F-A)
FB-PF =    In-line adjustable filter designator
nnnn =    Maximum wavelength
c =    Number of cavities
w =    FWHM (full width half max bandwidth)
x =    Fiber type  
  S =  Single mode fiber 9/125 for 1310 nm
  P =  Polarization maintaining fiber 9.5/125 for 1310/1550 nm
  M =  Multimode fiber 50/125
y =    Connectors  
  F =  FC connector type
  S =  SC connector type
z =    Polish  
  S =  Super physical contact polish (SPC)
  A =  Angled physical contact polish (APC)