Optical Measuring Instruments and Optical Device Test Systems

Significant progress has been made in the research and development of ultra-high-speed

optical communications and high-density wavelength-division-multiplexed optical communications (Dense-WDM),

and these technologies are increasingly being used in industry.

In the field of research and development, amplitude characteristics, chromatic dispersion characteristics,

and group division multiplexing characteristics are of utmost importance,

In the R&D field, amplitude characteristics, chromatic dispersion characteristics and group 

delay characteristics of optical devices or optical subsystems need to be measured with high optical frequency resolution.

Devices that require this feature include AWGs, fiber grating filters, and dispersion compensators.

In particular, since dispersion characteristics can hinder the improvement of optical communication bit rates, dispersion values must be reduced or managed.