A magnetoplasmonic electrical-to-optical clock multiplier.

We propose and investigate an electrical-to-optical clock multiplier, based on a bismuth-substituted yttrium iron garnet (Bi:YIG) magnetoplasmonic Mach-Zehnder interferometer (MZI). Transient magnetic fields induce a precession of the magnetization vector of the Bi:YIG, which in turn modulates the nonreciprocal phase shift in the MZI arms, and hence the intensity at the output port. We show that the device is capable of modulation depth of 16.26 dB and has a tunable output frequency between 279.9 MHz and 5.6G Hz. Correspondingly, the input electrical modulation frequency can be multiplied by factors of up to 2:1 x 10³ in the optical signal. Such a device is envisioned as a critical component in the development of hybrid electrical-optical circuitry. [ABSTRACT FROM AUTHOR]