Imprinted bidirectional waveguide platform for large-core optical transceiver

Abstract

We introduce a new configuration for large-core optical transceiver platforms based on asymmetric three-dimensional multimode Y junctions. We developed a simply structured bidirectional waveguide platform without using a wavelength division multiplexing filter or angled mirror. This structure was designed with two different size waveguides by using the three-dimensional ray-tracing method. This structure transmitted nearly 100% power in each direction, upstream and downstream. This simple and cost-effective structure was fabricated by the imprint process using a metallic master fabricated by an ultraprecision machining method. The experimental results show that this structure is suitable for bidirectional communications in large-core optical transceivers at 155 Mbits/s.

AlInGaAs MQW Transceiver with Electro-optic Modulation Characteristics for Free-Space Optical Communication and Sensing

“… 4 − 6 To enable miniaturization of optical communication equipment, it is necessary to develop integrated transceivers. 7 , 8 The study of integrated transceivers is also driven by the various applications of these devices, which include sensing, the Internet of Things, and military devices. 9 − 11 As a new type of free-space optical communication, the modulating retroreflector (MRR) communication technique used in the military field has attracted interest for use in the development of a transceiver with an electro-optic modulation function in the near-infrared range.…”

“…Transceiver modules for optical communication applications have been used widely in industry. − A transceiver module is composed of independent transmitters, receivers, functional circuits, optical interfaces, and other structural components. − To enable miniaturization of optical communication equipment, it is necessary to develop integrated transceivers. , The study of integrated transceivers is also driven by the various applications of these devices, which include sensing, the Internet of Things, and military devices. − As a new type of free-space optical communication, the modulating retroreflector (MRR) communication technique used in the military field has attracted interest for use in the development of a transceiver with an electro-optic modulation function in the near-infrared range. − Because of the coexistence of near-infrared optical signal emission and detection capabilities in multiple quantum wells (MQWs), InP-based materials with AlInGaAs MQWs represent a promising material choice for the design of a transceiver with near-infrared electro-optic modulation characteristics. − The transceiver made of MQWs can significantly reduce the cost and size for terminal devices of optical communication and sensing networks. Because the transceiver made of MQWs has the potential to achieve multifunction of optical signal emitting/detection and modulation on an ultrasmall wafer with MQWs, it provides an approach to perform a variety of optoelectronic functions on a single terminal.…”