All-fiber nonvolatile broadband optical switch using an all-optical method

Abstract

Optical switches based on phase change materials have enormous application potential in optical logic circuits and optical communication systems. Integration of all-optical switching devices with optical fibers is a promising approach for realizing practical applications in enabling the optical fiber to transmit and process signals simultaneously. We describe an all-fiber nonvolatile broadband optical switch using an all-optical method. We use a single optical pulse to modulate the phase change material deposited on the tapered fiber to achieve logical control of the transmitted light. The response time of our optical switch is 80 ns for SET and 200 ns for RESET. Our optical switches can operate in the C-band (1530–1565 nm). The optical switching contrast is 40%. Our approach paves the way for all-optical nonvolatile fiber optic communication.

Fiber-Integrated All-Optical Signal Processing Device for Storage and Computing

“…Based on our previous research results, − in this paper, we propose and demonstrate an all-optical signal processing device based on GST and optical fiber, which has both memory and matrix computing capabilities. We use single-mode fiber (SMF) combined with multimode fiber (MMF) to generate a Bessel-like beam to realize multilevel modulation of GST.…”

A non-volatile bipolar optical fiber memory based on phase change materials

“…[13] These advantages hold promising potential for achieving memory-computing integration, resulting in an all-photon, quasi-continuous, non-volatile multi-level memory. [14][15][16] Moreover, this multi-level memory enables all-photon storage, reading, pattern recognition, and addresses the urgent need for brain-like neural network computing. [17] Proposed as the fundamental structure of all-photon memory, a high-quality whispering gallery mode (WGM) spherical resonator inherits the characteristics of low loss, anti-environmental interference, long life, and high sensitivity of optical fiber (as shown in Figure 1).…”

A Nonvolatile Bipolar Optical Fiber Memory Based on Phase Change Materials

“…8−12 Phase change materials (PCMs) are ideal for creating a fully photonicsbased programming platform 13−18 because of their programmability, nonvolatility, and ability to achieve speeds up to 200 ns for all-photon computing. 19 The optical properties of the deformed material allow for the integration of memory, 20,21 computation with autonomous learning, 22,23 and information recognition, 24 which overcomes the limitations of the von Neumann bottleneck.…”

“…The growing demand for electronic equipment and online information processing − has brought attention to the limitations − of modern computing systems that rely on the von Neumann architecture. The development of photonic technology has led to the exploration of all-photon computing systems that use memristive devices. − Phase change materials (PCMs) are ideal for creating a fully photonics-based programming platform − because of their programmability, nonvolatility, and ability to achieve speeds up to 200 ns for all-photon computing . The optical properties of the deformed material allow for the integration of memory, , computation with autonomous learning, , and information recognition, which overcomes the limitations of the von Neumann bottleneck.…”