A laser diode with feedback using a fibre delay line as a stable-frequency signal generator and potential fibre sensor

An opto‐electronic oscillator based on Fabry‐Perot stabilized dual‐wavelength fiber ring laser

“…Typical OEOs are composed of a light source with an electro-optical modulator, an optical fiber, a photo-diode, an electronic amplifier, a frequency selective element (RF filter) and an RF power splitter, which are serially connected in a ring topology. Since the middle 80s, OEOs have been subject of considerable research effort, [1][2][3][4] aiming the generation of low phase-noise microwaves, local oscillator (LO) carriers and optical/RF combs. 5 OEOs have shown to be of great importance in radar and satellite applications, 6 for example, X-band (8-12 GHz) microwave carriers with narrow linewidth and low phase-noise are key to ensure signal integrity and improve the accuracy of radar targets position in military threats.…”

Limit Cycles and Chaos Induced by a Nonlinearity with Memory

“…The more general classes of distributed time delays [14][15][16][17][18], time-varying delays [19][20][21][22][23] and state-dependent delays [24,25] can can also lead to a rich phenomenology. Beyond their fundamental relevance, time-delayed systems are also relevant to many applications in computation and machine learning [26][27][28][29][30][31][32], sensing [33][34][35], and chaos-based communication [36][37][38]. While a number of systems with nonlinear time delay have garnered strong interest [22,[39][40][41][42], most efforts in the field have focused on systems with time delay in their linear response.…”