The optical frequency comb is a special light source that has spectral components of equal frequency intervals and is useful for various photonic measurements. In this paper, we propose a method to reduce the design and control difficulty of an etalon spectrometer, which is effective for optical frequency comb measurement. In the method, spectral data of the target optical frequency comb are obtained from a low-resolution etalon spectrometer by performing deconvolution data processing using the original algorithm called the inverse matrix data processing. This method makes it possible to measure the optical frequency comb more easily and cost-effectively.

No abstract

We propose and demonstrate conjugated RoF (C-RoF) secured by physical layer encryption with deliberate signal randomization, for high-RF-link-gain and high-security analog RoF transmission. 19.4-dBm high-power secured C-RoF-QPSK is experimentally achieved with improved fiber nonlinearity tolerance.

50-GHz spaced flat comb is experimentally generated from in-phase/quadrature optical modulator driven with 25-GHz signals. By non-mechanically adjusting amplitude and phase of driving signals, optical comb with even or odd frequency components are selectively generated.

We demonstrate spectral measurement of frequency components generated from an electro-optic-modulator-based comb generator. Even with a cost-effective, low-resolution scanning etalon, the spectra of comb lines can be recovered and analyzed through an inverse-matrix deconvolution process.