title: Flat, rectangular frequency comb generation with tunable bandwidth and frequency spacing.
abstract: The generation of flat, rectangular frequency combs with tunable frequency spacing and bandwidth is demonstrated. Therefore, several lines or sidebands are extracted out of an existing frequency comb, for example a femtosecond fiber laser. Subsequently, these lines are processed via two Mach-Zehnder modulators in order to generate a flat frequency comb with tunable frequency spacing. Optical frequency combs with various spacing and a maximum bandwidth of 260 GHz are generated. However, much higher bandwidth can be reached easily. The overall flatness of the generated combs is within 0.6 dB.
authors.forename: Stefan
authors.initials: S
authors.lastname: Preussler
authors.forename: Norman
authors.initials: N
authors.lastname: Wenzel
authors.forename: Thomas
authors.initials: T
authors.lastname: Schneider