An integrated nonlinear optical loop mirror in silicon photonics for all-optical signal processing

Abstract

The nonlinear optical loop mirror (NOLM) has been studied for several decades and has attracted considerable attention for applications in high data rate optical communications and all-optical signal processing. The majority of NOLM research has focused on silica fiber-based implementations. While various fiber designs have been considered to increase the nonlinearity and manage dispersion, several meters to hundreds of meters of fiber are still required. On the other hand, there is increasing interest in developing photonic integrated circuits for realizing signal processing functions. In this paper, we realize the first-ever passive integrated NOLM in silicon photonics and demonstrate its application for all-optical signal processing. In particular, we show wavelength conversion of 10 Gb/s return-to-zero on-off keying (RZ-OOK) signals over a wavelength range of 30 nm with error-free operation and a power penalty of less than 2.5 dB, we achieve error-free nonreturn to zero (NRZ)-to-RZ modulation format conversion at 10 Gb/s also with a power penalty of less than 2.8 dB, and we obtain error-free all-optical time-division demultiplexing of a 40 Gb/s RZ-OOK data signal into its 10 Gb/s tributary channels with a maximum power penalty of 3.5 dB.

Research on pulse transmission characteristics based on combined dispersion- decreasing fiber loop mirror

“…The interference at the center of the two pulses is constructive while the interference at the two wings is destructive. The transmission condition is reached at the center of the pulse but there is no transmission at both sides of the pulse, resulting in achieving a higher quality compressed pulse [16,17]. In order to study the evolution of the pulse compressing in the ber, a compression factor F is introduced.…”

On‐Chip Electrically Driven Tunable Meta‐Lens for Dynamic Focusing and Beam Steering

“…[5][6][7][8] Most of these functionalities rely on guiding wave behaviors in single mode or few mode waveguides with lateral confinement. There are also some structures working far from single mode condition like on-chip lens, [9,10] mirrors, [11,12] and curve gratings, [13,14] which enable unique capabilities of beam shaping and parallel signal processing. More recently, the concept from metasurface has been applied to onchip diffractive networks (ODN).…”

Off-Resonance Control and All-Optical Switching: Expanded Dimensions in Nonlinear Optics

“…This is the potential basis for an all-optical switch. Here, the realm of application may extend to control circuitry in signal propagation and waveguide networks for optical communication [42].…”