SECOND ORDER NONLINEAR COMPENSATION CIRCUIT, DEVICE DRIVE CIRCUIT, LASER DRIVE CIRCUIT, WAVELENGTH TUNABLE LASER LIGHT SOURCE, AND SECOND ORDER NONLINEAR COMPENSATION METHOD

摘要

To accurately compensate only the second order nonlinearity.SOLUTION: An AD converter 12 AD-converts Vin at a conversion magnification G proportional to an input voltage signal Vin and outputs obtained digital data as converted output data Dc. The DA converter 13 DA-converts the converted output data Dc, and outputs obtained analog voltage data as an output voltage signal Vout obtained by applying a second order nonlinear compensation to the Vin.SELECTED DRAWING: Figure 1