An open-loop approach to optical domain combined dual-loop Optoelectronic Oscillator

Abstract

Optoelectronic Oscillators (OEOs) are devices capable of generating high frequency, high spectral purity electrical signals. These devices utilize both electronic and photonic components. Properties of the latter create opportunities to improve spectral parameters and distinguish single operating frequency. Dual-loop OEO is one of possible configurations to achieve abovementioned goal. The mix of electrical and photonic technology in such devices causes however several analysis issues. Most frequent approach involves circuit-based analysis, which cannot provide sufficient information on the operating frequency and output power. In this paper we present an open-loop analysis of dual-loop OEO and its comparison with experiment results.

Implementation of a Highly-Sensitive and Wide-Range Frequency Measurement Using a Si3N4 MDR-Based Optoelectronic Oscillator

“…2. Here the open-loop gain bandwidth is defined as the frequency range that link gain is greater than unity, which ensures OEO's oscillation [15]. And the λ cn and f cn are one-to-one correspondence between wavelength and frequency of the TLS.…”