QUEBEC CITY, Canada, Oct. 4, -- EXFO Electro-Optical Engineering Inc. announced a major enhancement to its IQ-2600B and FLS-2600B tunable laser sources for C- and L-band testing. EXFO improved the wavelength uncertainty of its manufacturing plant tunable laser sources, both modular and benchtop units, to ±15 pm to enable the characterization of DWDM components with the utmost precision. EXFO also increased the wavelength repeatability of its tunable lasers to ±5 pm to ensure accurate measurements time after time for optical component manufacturers. The IQ-2600B Tunable Laser Source is offered as a module in the IQ-12004B DWDM passive component test system for C- and L-Band testing of insertion loss, polarization dependent loss and optical return loss. Both the IQ-2600B and FLS-2600B Tunable Laser Sources will be displayed at ECOC from September 30, 2001 to October 4, 2001 at Amsterdam, the Netherlands.