Bare Fiber Holder Eases Positioning for Optical Measurements

Bare fiber measurements are common in optical component manufacturing before the device under test (DUT) is connectorized and final tested. Insertion loss and polarization dependent loss are typical measurements on passive components before they are connectorized. The precision of these measurements is high, on the order of ±0.01 dB, and repeatability of the measurements is critical in determining the ultimate throughput of the process and devices. With small fiber cores, 8 to 62.5 μm, handling bare fiber for measurements is difficult because the fiber core is easily susceptible to breakage.