HP E5574A Optical Loss Analyzer Polarization Dependent Loss Tester

The HP E5574A Optical Loss Analyzer is a precision polarization-dependent loss (PDL) and absolute power measurement instrument designed for fiber-optic component characterization in communications and photonics test applications. It offers exceptional PDL/PDG accuracy of ±0.005 dB and absolute power accuracy of ±2.2%, complying with FOTP-157 standards, and requires no reference measurement for PDL determination. Featuring built-in, fiber-based polarization control and interchangeable laser sources (1310 nm, 1550 nm, or dual-wavelength Fabry–Perot), it covers 1250–1660 nm wavelengths with support for optical heads spanning 800–1700 nm and power levels from +27 to –90 dBm, accommodating a wide range of components. Its plug-in interface options (pigtail, straight or angled connectors) and GPIB remote control integration enable versatile bench or production deployment. With display resolution of 0.0001 dB, rapid measurement speed, and reliable, low-noise operation, the E5574A delivers accurate loss, PDL, PDG, and PDCR testing—making it ideal for optical network verification, component manufacturing, and research applications.