FEBRUARY 8, 2010 -- Phoenix Photonics says its differential group delay (DGD) line uses 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. The Phoenix DGD features include an all-fiber design, passive operation, and low insertion loss, says the company.

The DGD unit is commonly used in PMD compensation applications, sensing, and PMD emulators.

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