Result for "Optical fiber measurement",181

Spatial-mode Optical Measurement Technology to Support Diverse Global Services in the Future | NTT R&D Website

-mode optical measurement technology is essential for high-quality, next-generation optical-fiber

https://www.rd.ntt/e/research/JN202301_20661.html

Atsushi Nakamura | NTT R&D Website

Optical measurement technologies for realizing next-generation optical fiber transmission lines We aim to

https://www.rd.ntt/e/organization/researcher/special/s_073.html

Hiroshi Takahashi | NTT R&D Website

/center/dept Optical measurement technologies for environmental monitoring using optical fiber networks We

https://www.rd.ntt/e/organization/researcher/special/s_085.html

Optical fiber access technologies | NTT Access Network Service Systems Laboratories | NTT R&D Website

measurement technology focuses on these features. When using an optical fiber network for communication

https://www.rd.ntt/e/as/theme/02.html

Existing Optical Communication Infrastructure Will Lead the Future of Social Contribution through Optical Fiber Sensing Technology | NTT R&D Website

the optical fiber. By combining it with NTT’s optical measurement technology to increase sensing

https://www.rd.ntt/e/research/JN202601_37939.html

Optical Technologies for Optical Quantum Computing with Continuous Variables | NTT R&D Website

. Configuration of optical fiber communications and continuous-variable optical quantum computer. ＊2 Measurement

https://www.rd.ntt/e/research/JN202304_21560.html

Past and Future Prospects for Advanced Operation of Access Network Facilities | NTT R&D Website

-traffic-measurement results with optical fiber cables laid in field. Optical-fiber environmental

https://www.rd.ntt/e/research/JN202307_22286.html

Ultra-high-precision frequency transmission technology enables optical lattice clock network concept｜NTT R&D Website

-high-precision optical lattice clock with a measurement error of 1 × 10-18 or less, differences in

https://www.rd.ntt/e/communication_device/0004.html

Takeo Sasai | NTT R&D Website

capable of visualizing the entire length of optical fiber links without dedicated measurement equipment

https://www.rd.ntt/e/organization/researcher/special/s_106.html

Other Corporations | Exhibits | Tsukuba Forum 2026

.,Ltd.  MARUBUN CORPORATION  MIKI Inc,  A specialized trading company in optical fiber measurement

https://www.rd.ntt/e/as/tforum/companylist_other.html

100,000-spin coherent Ising machine｜NTT Basic Research Laboratories | NTT R&D Website

DOPO pulses were generated in a ring cavity that included a 1-km optical fiber, and the pulses were

https://www.rd.ntt/e/brl/latesttopics/2021/09/latest_topics_202109301549.html

Research

optical parametric oscillators”. Fig: Coherent Ising machine with measurement-feedback. S. Utsunomiya, K

https://www.rd.ntt/brl/people/htakesue/research.html

Broadband Continuous-wave Optical Quadrature Squeezer for Ultra-fast Optical Quantum Computers | NTT R&D Website

light are separated and injected to each output optical fiber [14]. Squeezing-level measurement The

https://www.rd.ntt/e/research/JN202206_18572.html

Access Network Innovative Technology and Development Project | NTT R&D Website

maintenance of access network (railway and civil engineering), as well as the development of optical fiber

https://www.rd.ntt/e/ntc/theme/infra.html

C21-e.pdf

Commercialization Schedule #Safety & Security #Risk Management Underground optical fiber cables monitor the urban

https://www.rd.ntt/forum/2025/doc/C21-e.pdf

Large-scale artificial spin network realized using long-distance optical fiber cavity｜NTT Basic Research Laboratories | NTT R&D Website

Large-scale artificial spin network realized using long-distance optical fiber cavity｜NTT Basic

https://www.rd.ntt/e/brl/latesttopics/2016/04/latest_topics_201604181637.html

Optical-lattice-clock-network Technology for Gravitational Potential Sensing | NTT R&D Website

construction of the ultrahigh-precision optical frequency transmission fiber link in the Tokyo metropolitan

https://www.rd.ntt/e/research/JN202304_21619.html

no_23_en.pdf

from an entangled pair state, will be realized over optical fiber networks. We have achieved an

https://www.rd.ntt/brl/event/splaza2009/poster/EN/no_23_en.pdf

Demonstration of a CEO-locked Frequency Comb at Telecommunications Wavelengths with Low Pulse Energy

ruler" with a cesium atomic clock for controlling the spacing. Optical frequency measurement is one of

https://www.rd.ntt/e/brl/result/activities/file/report07/report28.html

Optoelectronic Subsystem Research Group｜Device Technology Laboratories｜NTT R&D Website

Research Group Introduction We are developing optical interconnect technology for high-speed and low-power

https://www.rd.ntt/e/dtl/technology/optoelectronic_subsystem_research_group_ntt_device_technology_laboratories_ntt_rd_website.html

Optical Circuit Technologies for Next-generation Computing Using Light | NTT R&D Website

devices have been developed for optical fiber communications by using planar lightwave circuit (PLC

https://www.rd.ntt/e/research/JN202206_18579.html

A new scheme for manipulating the color of single photons｜NTT Basic Research Laboratories | NTT R&D Website

- Lossless wavelength conversion of single photons in an optical fiber - NTT Basic Research Laboratories has

https://www.rd.ntt/e/brl/latesttopics/2016/03/latest_topics_201603262135.html

Quantum Neural Network on Cloud｜NTT Basic Research Laboratories | NTT R&D Website

setup of the QNN, which is based on an optical fiber cavity comprising a 1-km-long optical fiber and an

https://www.rd.ntt/e/brl/latesttopics/2017/11/latest_topics_201711201940.html

NTTAS_EN_omote

high speed optical fiber communication services at lower cost. Analyze network device alarms and past

https://www.rd.ntt/e/download/NTTAS_2024Pamphlet_EN.pdf

An on-chip quantum buffer realized｜NTT Basic Research Laboratories | NTT R&D Website

photon pairs via spontaneous four-wave mixing *7 in an optical fiber and used them for the delay

https://www.rd.ntt/e/brl/latesttopics/2013/11/latest_topics_201311130702.html

Heterogeneous Materials and Devices Research Group｜Device Technology Laboratories｜NTT R&D Website

business opportunities in the fields of measurement, computation, and communications. Focusing on optical

https://www.rd.ntt/e/dtl/technology/heterogeneous_materials_and_devices_research_group_ntt_device_technology_laboratories_ntt_rd_website.html

Accelerating Practical Application of 4-core Optical Fiber with the Same Cladding Diameter as Current Optical Fiber and Advancing Power-over-fiber Technology | NTT R&D Website

Accelerating Practical Application of 4-core Optical Fiber with the Same Cladding Diameter as

https://www.rd.ntt/e/research/JN202502_32098.html

Demonstration of quantum cryptography without error rate monitoring｜NTT Basic Research Laboratories | NTT R&D Website

0 or π. The modulated packet is then sent to Bob through an optical fiber. Bob is equipped with a

https://www.rd.ntt/e/brl/latesttopics/2015/09/latest_topics_201509150148.html

List of Visitors' Talks (Fiscal 2007)

"Symmetries and Cryptography" Feb. 27 Mr. Tony Pisano NP Photonics, U.S.A. "Recent Status in Optical Fiber

https://www.rd.ntt/e/brl/result/activities/file/report07/data07.html

Highly Sensitive Detection and Control of a Nanowire Mechanical Resonator Using an Optical Microcavity | NTT R&D Website

optical fiber is brought into contact with this glass ball, a cavity-optical mode called the whispering

https://www.rd.ntt/e/research/JN202202_17217.html

Coherent Ising Machine for Combinatorial Optimization Problems

implement all-to-all optical couplings among DOPOs, we employed a measurement and feedback (MFB) scheme [Fig

https://www.rd.ntt/e/brl/result/activities/file/report16/report19E.html

Contents

Piezoresistance of InAs/AlGaSb Heterostructure Nanobeam Energy Distribution Measurement of Nonequilibrium Carriers

https://www.rd.ntt/e/brl/result/activities/file/report07/2007_E.html

List of Invited Talks at International Conferences (2007)

-Scale Optical Integration", Optical Fiber Communication Conference/National Fiber Optic Engineers

https://www.rd.ntt/e/brl/result/activities/file/report07/data11.html

Standardization Trends in Technologies Related to Fixed-line Networks | NTT R&D Website

Networks fixed-line network optical fiber optical connector Confronted by the development of various

https://www.rd.ntt/e/research/JN202311_23702.html

国際会議招待講演一覧 (2006)

-Scale Optical Integration", Optical Fiber Communication Conference/National Fiber Optic Engineers

https://www.rd.ntt/brl/result/activities/file/report07/data10.html

Creating New Value: Access Networks to Support a Sustainable Society | NTT R&D Website

experience (EX). We are conducting R&D of cutting-edge elemental technologies in five areas (optical-fiber

https://www.rd.ntt/e/research/JN202408_28840.html

Publications

Y. Yamamoto, "Long-distance entanglement-based quantum key distribution over optical fiber," Opt

https://www.rd.ntt/brl/people/htakesue/papers.html

Access Network Technologies to Implement IOWN | NTT R&D Website

, optical fiber access technology, infrastructure technology, and operation technology, to achieve its

https://www.rd.ntt/e/research/JN202207_18784.html

Quantum State Tomography for High-dimensional Time-bin States

-dimensional Time-bin States Takuya Ikuta and Hiroki Takesue Optical Science Laboratory High-dimensional

https://www.rd.ntt/e/brl/result/activities/file/report16/report20E.html

Generation of Energy-Time Entangled Photon Pairs in 1.5-μm Band

telecom band is essential for quantum communication over optical fiber networks[1, 2]. In this paper, we

https://www.rd.ntt/e/brl/result/activities/file/report05/report27.html

Toward a Quantum Internet | NTT R&D Website

-point quantum communication network worldwide. For example, if we use a standard optical fiber as the

https://www.rd.ntt/e/research/JN202304_21666.html

Development of Membrane Optical Modulators for IOWN | NTT R&D Website

increase in Internet traffic, the application area where optical fiber can show its superiority has been

https://www.rd.ntt/e/research/JN202206_18502.html

Photonic-Crystal Single-Mode Waveguide

-mode optical waveguide. Fig. 2. Group dispersion of photonic-crystal waveguide (measurement). Group

https://www.rd.ntt/e/brl/result/activities/file/report01/E/report20.html

Transport Innovation Laboratory | NTT Network Innovation Laboratories | NTT R&D Website

reflectometers (OTDR) are used for this purpose. However, this method required the measurement at all optical

https://www.rd.ntt/e/mirai/organization/product_4/

来訪者による講演一覧　（2007年度）

27日 Mr. Tony Pisano NP Photonics, U.S.A. 「Recent Status in Optical Fiber Lasers in Telecom-band」 3月17

https://www.rd.ntt/brl/result/activities/file/report07/data06.html

C21-j.pdf

ファイバケーブルで測定 Measurement of micro-vibrations with underground optical fiber cables. 【関連Link】 ー https

https://www.rd.ntt/forum/2025/doc/C21-j.pdf

Generation of High-Purity Entangled Photon Pairs Using Silicon Wire Waveguide

* Optical Science Laboratory, *Microsystem Integration Laboratories Recently, 1.5-µm band entangled photon

https://www.rd.ntt/e/brl/result/activities/file/report08/report27.html

Quantum Optical State Control Research Group | NTT Basic Research Laboratories | NTT R&D Website

degenerate optical parametric oscillator pulses generated using a nonlinear fiber Sagnac loop Opt. Lett. 45

https://www.rd.ntt/e/brl/group_introduction/group_009.html

Latest Research Contents | NTT Basic Research Laboratories | NTT R&D Website

-high precision optical frequency transfer via 240-km-long telecommunications fiber 03/06/2020

https://www.rd.ntt/e/brl/latesttopics/

Performance Comparison between Coherent Ising Machines and Quantum Annealer｜NTT R&D Website

turning on and off the PSA placed in a 1-km optical fiber with a 1-GHz frequency (Fig. 1). The interaction

https://www.rd.ntt/e/research/JN202103_10945.html