In Pennsylvania, FiberOptic.com, The Fiber Optic Marketplace LLC, of Breinigsville will be the master distributor for Artisan Laboratories Corp.’s Sidelighter, a product that connects to radio-frequency and microwave signal analyzers to identify defects and failures in fiber optic cables and connectors. FiberOptic.com will control the US distribution of the product through its Web site, sales force and subdistribution channels. Artisan Laboratories, of Chalfont, develops microwave photonics technology for the defense, space, medical and communications sectors.