Taiji Sakamoto

Study of few-mode fiber based SMS sensor for simultaneous measurement of temperature and strain

The applicability of few-mode fiber (FMF) as a single-multi-single (SMS) sensor is investigated. We examine experimentally the wavelength shift and/or visibility characteristics in an FMF based SMS sensor by changing the external temperature and longitudinal strain individually. We investigate numerically the temperature sensitivity of the fabricated sensor by considering the temperature dependence of the effective refractive index difference. Our results show that an FMF based SMS sensor can be used to measure the relative variation in temperature and strain simultaneously, and whose sensitivity can be tailored easily by designing two LP modes in an FMF.

Multi-Core Fiber Technology: Next Generation Optical Communication Strategy

Space-division multiplexing is expected to be a key technology both for dealing with the future capacity crunch facing traditional single- mode fiber and for realizing a sustainable optical network that can accommodate the various data streams originating from, for example, future 5G communication, the Internet of Things, and machine-to-machine networks. This article describes the potential of space-division multiplexing as regards optical fiber and cable technology. We focus on the potential of multi-core fiber and investigate the reality of multi-core-fiberbased space-division multiplexing optical wiring as the first example of a space-division multiplexing application taking the latest research and development into consideration. Finally, we show that the key technology behind multi-core-fiber-based space-division multiplexing optical wiring is ready for discussion as a near future standard.

Space division multiplexing technology: Next generation optical communication strategy

Space division multiplexing (SDM) is expected to be a key technology both for dealing with the future capacity crunch facing traditional single-mode fibre (SMF) and for realizing a sustainable optical network that can accommodate the various data streams originating from, for example, future 5G communication, the Internet of things (IoT), and machine to machine (M2M) networks. This paper describes the potential of SDM as regards optical fibre and cable technology. We focus on the potential of multi-core fibre (MCF), and investigate the reality of MCF based SDM optical wiring as the first example of an SDM application taking the latest research and development into consideration. Finally, we show that MCF based SDM optical fibre cable will be a promising technology for next generation optical networks, and the key technology behind MCF based SDM optical wiring is ready for discussion as the near future standard.

Few-mode fiber for mode-division-multiplexed transmission with MIMO DSP

We review recent work on few-mode fibers for mode-division-multiplexed transmission with MIMO DSP and introduce our demonstrations of a low DMD 4 LP mode fiber and DMD compensation transmission line.

O-band DWDM transmission over 24 km PCF by using optical frequency comb based multi-carrier source

We generated 15 carriers with a 50-GHz spacing in the O-band using an optical frequency comb technique and a Fabry-Perot filter. We demonstrated a 10 Gbps × 15 DWDM transmission over a 24-km PCF.