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Fiber Optic Differential Group Delay Line (DGD)

The Phoenix Photonics differential group delay (DGD) line utilises a compact high linear birefringence fiber to provide an accurate fixed differential delay. Based on the technology developed to manufacture high performance Lyot depolarizers, precise differential time delay coils are fabricated. Time delays can be selected from fixed delays to customer selectable delays.


Differential Group Delay Line (DGD) Options

  • The differential delay line can be supplied with an integrated polarization controller (PSC).
  • For applications in which specific polarization state is required for analysis or launch an integrated polarizer at 45deg to the input axis can be supplied.
  • Single mode fiber pigtails or standard connector interface.


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