Page 214 - Sensors and Control Systems in Manufacturing

Fiber Optics in Sensors and Contr ol Systems
3.17 Dual Laser Test Sets 175
The Photodyne 2260XF and 2260XFA are switchable dual laser test
sets, with a transmit and receive section in one unit. They measure
and display loss in fiber links at both 1300 and 1550 nm simultane-
ously in one pass. They are designed for use in installing, maintaining,
and troubleshooting single-mode wavelength-division multiplexed
(WDM) fiber-optic links operating at 1300- and 1550-nm wavelengths.
They may also be used for conventional links operating at either 1300
or 1550 nm.
The essential differences between the two models are that the XF
version (Fig. 3.55) has a full complement of measurement units, log
and linear (dBm, dB, mW, µW, nW), whereas the XFA version has
log units only (dBm, dB). In the XF version, laser power output is

FIGURE 3.55 Photodyne 2260XF switchable dual laser test set. (Courtesy 3M
Corporation)