Optical test method for supporting construnction and operation of multi-core fiber transmission lines is presented. This method characterizes a crosstalk, which is a unique phenomenon of multi-core fibers, by utilizing conventional measuring instruments. In this exhibition, we demonstrate actual testing of a multi-core fiber.
We exhibit a high-density optical fiber cable for aerial long-haul transmission with low-loss SMF suitable for long-distance and large-capacity transmission, towards economical construction of transmission systems over 400Gbps.
This presentation introduces the APN transceiver (APN-T) configuration and control techniques that can accommodate optical transceivers with various optical transmission modes, such as digital coherent and intensity-modulation and direct-detection (IMDD), and enables efficient wavelength path provisioning and maintenance operation through remote control from the central office. Key technologies are follows: (1) APN-T control method, (2) 25G-class APN-T and flexible increase/decrease of APN-T, (3) 100G-class APN-T, (4) 400G-class APN-T and automation of optical-path setting and update, (5) low power consumption of wavelength tunable light source for APN-T.
We will exhibit a method of fully softwarizing optical access systems, which have traditionally consisted of dedicated equipment, on general-purpose servers, including transmission functions. This development is expected to significantly shorten the time required to develop new transmission functions and efficiently provide services by deploying communication functions and edge applications as needed.
The use of intensity modulation and direct detection (IMDD) transmission systems, which is more cost-effective than digital coherent transmission, is considered for realizing economically all-photonics network (APN). Although the transmission distance of high-speed IMDD signals is limited, we present optical transmission technologies that enable long-distance transmission of high-speed IMDD signals in this dynamic demonstration.
We have concluded a joint experiment with NTT AgriTechnology Corporation and demonstrated the feasibility of strawberry harvesting with a remotely controlled robot using low-latency FDN to control end-to-end service quality in real-time by integrating network latency and edge processing time. The developed system enables remote operation without stress by measuring network latency and processing time, and changing the arm speed of the robot on the basis of the service quality at that time. Here, we exibits and you can experience the developed system simulating the remote strawberry havesting.
The utilization of drones is advancing across various industries, including inspection of public infrastructure, disaster response, and agriculture. By combining drones with low-latency and stable communication, as well as edge-based image processing environments within the network, smooth remote control is achieved. This enhances operational efficiency and increases the flexibility of use cases. This exhibit showcases promising future applications of remote drone operations and provides an overview of the supporting technologies.
By controlling delay jitter through with our developed method, we demonstrate that precise control of industrial equipment is possible even in environments where multiple devices communicate simultaneously, such as shared networks. In the exhibition, we will showcase the necessity of this technology by showing how delay jitter affects the coordinated movements of two robotic arms.
The requirements for optical fiber network are becoming more diverse as the expansion of optical fiber communications. Our future optical fiber technologies to meet the demand for the performance and environmental requirements will be introduced.
We will introduce compact communication terminals that provide a communication environment for IoT sensors installed in off-grid areas (Remote areas, underground, etc.) and places where power lines are difficult to install.
In this exhibition, we will showcase terminals with ultra-low power consumption and sleep functions that reduce average power consumption and improve safety by incorporating all-solid-state batteries.
An analog optical transmitter that utilizes optical heterodyne technology has a complex configuration. Our Armstrong modulation technology can transmit a wider bandwidth signal and be made compact. As a result, it can be installed not only in the station building but also in the town, and other systems such as radio can be accommodated.
We introduce a high-efficiency wireless power supply that enables the deployment and management of many IoT devices. In the demonstration, we use a commercially available Wi-Fi access point to activate IoT devices by converting the communication radio waves into power. The demonstration shows the concept of our wireless power supply and the increase of generated power by using our communication frequency control technology. Various IoT services become feasible as we are freed from the battery maintenance of IoT devices and we can deploy and manage many IoT devices.
NTT aims to expand the service area of mobile communications using satellite and HAPS communications in the Beyond 5G/6G era. However, it is difficult to achieve high transmission speeds with satellite and HAPS over long distances, and the transmission speed fluctuates due to weather conditions. In order to provide high quality services to customers in such environments, we are considering the following technologies over three stages (short term: dynamic traffic control in disaster response wireless systems, medium term: communication priority control, long term: communication route control), and this exhibition will introduce the short-term and medium-term initiatives.
While a high-frequency wireless band can enable large capacity wireless communication, it requires handover because transmission quality is affected by shielding and huge transmission loss. We developed and evaluated a dynamic site-diversity technique using multiple radio unit to avoid interruption caused by handover. This exhibition shows how the product version of the 60-GHz wireless LAN (WiGig) device supports the technique.
We introduce and present the latest status of multi-radio proactive control technologies (Cradio®). In addition to the current functions and examples of their use, we will also present the status of future functions with demonstrations.
Promoting DX in factories requires a stable wireless and optical network environment with low latency, large capacity, and various equipment. In this exhibition, we will introduce a visualization function that enables you to check the communication status at a glance and a path switching function that enables efficient network use on the basis of the application, enabled by the real-time cooperation between Cradio® for radio control and low-latency FDN for optical control.
By combining Wireless-network dynamic control technology(Cradio) and Intent extraction technology, we demonstrate the feasibility of flexible multi-wireless network control in accordance with user requirements more easily. The elemental technologies (Intent extraction, wireless control, wireless sensing) are also exhibited.
Assuming a 40-GHz band distributed MIMO system in which base station antennas are distributed, this exhibition presents a technique in which a beam search is performed on all antennas simultaneously. This makes it possible to quickly detect the optimal combination of antennas and beams for multiple wireless terminals even in a high-speed moving and shielded environment.
A static exhibition of a 40-GHz band distributed MIMO testbed system combining A-RoF will be held at Tsukuba Research Laboratories.
* Joint exhibit with DOCOMO and NEC