Polarization-maintaining (single polarization) fiber isolator (SPFI). JDS model: SPFI21WTSS02

With FC/APC connector at output end, this connector is verified as PMF (viewed by fiber scope). 900um-buffered fiber. Compared with JDS SMF isolator datasheet in the 1st pdf link below, we believe this isolation working wavelength is around 1550nm ("2" after "SPFI" in P/N should represent 1550nm). Upon your request, we can do a lab test to verify the working wavelength is 1550nm. "JDS" and "==>" is marked on isolator main-body. Last htm link is the datasheet of similar product by other vendor. Made by E-tek division of JDS.Manufactured in May or October 2001. General Feature:SPFI is ideal for laser diode modulation interface, instrumentation, fiber gyroscopes, and test systems. It allows a single polarization of the input light to pass with a high extinction ratio. The SPFI features a low insertion loss and high isolation. It is available in one- or two-stage models with polarization-maintaining or standard single-mode fiber options.

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