Explanipedia

High-Spatial-Resolution Optical Correlation-Domain Reflectometry with 100-km Measurement Range Open

Takaki Kiyozumi, Soshi Yoshida, Yuta Higa, K. Motoda, Sze Yun Set , et al. · 2025

In the maintenance of optical fiber networks, there is a growing demand for high-precision measurement of optical loss distribution and fault locations over long distances. In this study, we propose an OCDR method incorporating periodic ps…

Back Cover: Photodynamic therapy management of canine mammary gland tumour with wireless upconversion implant (View 5/2025) Open

Ivy Joy Toh, Jasen Ly, Bowen Sun, Jannah Kamarudin, I‐Van Ho , et al. · 2025

Photodynamic therapy management of canine mammary gland tumour with wireless upconversion implant Open

Ivy Joy Toh, Jasen Ly, Bowen Sun, Jannah Kamarudin, I‐Van Ho , et al. · 2025

In photodynamic therapy (PDT), efficacious tumour regression is attained through sufficient illumination intensity and frequency across photosensitised tumour area. An emerging tether‐free optical implantable is realised by shifting the ex…

GHz fundamental mode-locking of a highly integrated Er-doped all-fiber ring laser Open

Maolin Dai, Bowen Liu, Yifan Ma, Ruoao Yang, Zhigang Zhang , et al. · 2025

High repetition rate ultrafast fiber lasers are essential for both scientific research and industrial applications. Here, we report the first, to the best of our knowledge, all-fiber ring laser with a fundamental repetition rate exceeding …

Orthogonally-Polarized Bi-directional Dual-Comb Fiber Laser Open

Sze Yun Set, Kota Uyama, Takuma Shirahata, Shinji Yamashita · 2025

In order to enable dual-comb measurements, we in- vestigated the feasibility of a stable and cost-effective dual-comb fiber laser. We developed and demonstrated a nonreciprocal isolating novel juxtaposition appara- tus(NINJA), an essential…

Rapidly and widely repetition-rate-tunable free-running dual-comb fiber laser with a bidirectional polarization-multiplexing configuration Open

Bowen Liu, Maolin Dai, Yifan Ma, Takuma Shirahata, Shinji Yamashita , et al. · 2025

Advances and challenges of mode-locked fiber lasers Open

Shinji Yamashita, Sze Yun Set · 2025

GHz fundamental mode-locking of a highly integrated Er-doped all-fiber ring laser Open

Maolin Dai, Bowen Liu, Yifan Ma, Ruoao Yang, Zhigang Zhang , et al. · 2024

High repetition rate ultrafast fiber lasers are important tools for both fundamental science and industry applications. However, achieving over GHz repetition rate in passively mode-locked fiber ring lasers is still challenging. Here, we d…

Design of Fiber-Longitudinal Optical Power Monitor Open

Takeo Sasai, Sze Yun Set, Shinji Yamashita · 2024

This paper presents analytical results on the accuracy of fiber-longitudinal optical power monitoring (LPM) at arbitrary positions. To quantify the accuracy, the position-wise variance and power-profile SNR of LPM are defined and analyzed,…

783 MHz fundamental repetition rate all-fiber ring laser mode-locked by carbon nanotubes Open

Maolin Dai, Bowen Liu, Yifan Ma, Takuma Shirahata, Ruoao Yang , et al. · 2024

We demonstrate a 783 MHz fundamental repetition rate mode-locked Er-doped all-fiber ring laser with a pulse width of 623 fs. By using carbon nanotubes saturable absorber, a relatively low self-starting pump threshold of 108 mW is achieved.…

Mode-Locked Fiber Laser with up to 19 kHz Wavelength Sweep Rate via External Pump LD Modulation Open

Guanyu Ye, Maolin Dai, Bowen Liu, Yifan Ma, Takuma Shirahata , et al. · 2024

For the first time, we introduce a rapid wavelength-swept, passively mode-locked fiber laser in an all-polarization-maintaining and all-fiber configuration. Achieving an exceptional wavelength sweep rate of up to 19 kHz through external mo…

Temperature dependent multi-pulse threshold due to SWCNT/PDMS saturable absorber Open

Rhona L Hamilton, Moeri Horiuchi, Bowen Liu, Takuma Shirahata, Sze Yun Set , et al. · 2024

The threshold pump power for modelocking decreased by 18% when the temperature was increased from 25 to 100 degrees C, where a SWCNT/PDMS coated tapered fiber was used as the saturable absorber in a fiber laser. Further, the pump power at …

Rapid-scanned and self-corrected repetition rates enabled in a bidirectional polarization-multiplexed fiber laser Open

Bowen Liu, Maolin Dai, Takuma Shirahata, Yifan Ma, Shinji Yamashita , et al. · 2024

Repetition-rate-scanned lasers are practical in accordion frequency comb generation that serves as a variable gearbox connecting optical and radio wave domains. Rapid and wide-range scanned repetition rate can benefit versatile purposes, h…

Pump-driven wavelength switching in an all-polarization-maintaining mode-locked fiber laser incorporating a CNT/PDMS saturable absorber Open

Maolin Dai, Bowen Liu, Guanyu Ye, Takuma Shirahata, Yifan Ma , et al. · 2024

Mode-locked fiber lasers with wavelength tunability and dual-wavelength mode-locking capability have wide applications in nonlinear imaging, precision metrology and photonic sensing. Here, for the first time, we propose and experimentally …

Pump-power-controlled L-band wavelength-tunable mode-locked fiber laser utilizing all polarization maintaining nonlinear polarization rotation Open

Guanyu Ye, Bowen Liu, Maolin Dai, Yifan Ma, Takuma Shirahata , et al. · 2024

For the first time, we present the pump power-controlled wavelength-tunable mode-locked fiber laser in the L-band (1565 nm to 1625 nm), achieved by all-polarization maintaining (all-PM) nonlinear polarization rotation (NPR). The wavelength…

All-polarization-maintaining, efficiently wavelength-tunable, Er-doped mode-locked fiber laser with a compact reflective Lyot filter Open

Maolin Dai, Bowen Liu, Takuma Shirahata, Xiangnan Sun, Sze Yun Set , et al. · 2023

Wavelength tunable mode-locked fiber lasers have highly potential applications in precision spectroscopy, nonlinear microscopy and photonic sensing. Here, we present a compact and thermal-sensitive reflective Lyot filter and utilize it for…

Ranging disambiguation of LiDAR using chirped amplitude-modulated phase-shift method Open

Zheyuan Zhang, Takuma Shirahata, Ruiyan Chen, Shinji Yamashita, Sze Yun Set · 2023

Ranging ambiguity is the major challenge in most LiDAR techniques with amplitude modulation, which limits the performance of range detection due to the tradeoff between the ranging precision and the unambiguous range. Here we propose a nov…

Fast wavelength-swept polarization maintaining all-fiber mode-locked laser based on a piezo-stretched fiber Lyot filter Open

Xiangnan Sun, Shinji Yamashita, Sze Yun Set · 2023

We demonstrate for the first time a strain-controlled all polarization-maintaining (PM) fiber Lyot filter based on a piezoelectric lead zirconate titanate (PZT) fiber stretcher. This filter is implemented in an all-PM mode-locked fiber las…

Pump-Driven Wavelength Switching in an All-Polarization-Maintaining Mode-Locked Fiber Laser Incorporating a Cnt/Pdms Saturable Absorber Open

Maolin Dai, Bowen Liu, Guanyu Ye, Takuma Shirahata, Yifan Ma , et al. · 2023

Strong optomechanical interactions with long-lived fundamental acoustic waves Open

Wendao Xu, Arjun Iyer, Lei Jin, Sze Yun Set, William H. Renninger · 2022

Traveling-wave optomechanical interactions, known as Brillouin interactions, have now been established as a powerful and versatile resource for photonic sources, sensors, and radio-frequency processors. However, established Brillouin-based…

Correction to “SWCNT@BNNT With 1D van der Waals Heterostructure With a High Optical Damage Threshold for Laser Mode-Locking” Open

Zheyuan Zhang, Xiangnan Sun, Pengtao Yuan, Shoko Yokokawa, Yongjia Zheng , et al. · 2022

We found that there is an unneeded sentence at the end of the abstract. It would be very nice of you if you can delete it for us.

Review on optical nonlinearity of group-IV semiconducting materials for all-optical processing Open

Chih‐Hsien Cheng, Cai-Syuan Fu, Huai‐Yung Wang, Sze Yun Set, Shinji Yamashita , et al. · 2022

Group-IV semiconductor compounds with intense optical nonlinearity have emerged as a new branch of all-optical processing materials benefiting from the manufacturing compatibility with silicon electronic and photonic integrated circuits. D…

Strong Optomechanical Interactions with Long-lived Fundamental Acoustic Waves Open

Wendao Xu, Arjun Iyer, Lei Jin, Sze Yun Set, William H. Renninger · 2022

Traveling-wave optomechanical interactions, known as Brillouin interactions, have now been established as a powerful and versatile resource for photonic sources, sensors, and radio-frequency processors. However, established Brillouin-based…

Low-Temperature PECVD Growth of Germanium for Mode-Locking of Er-Doped Fiber Laser Open

Chun‐Yen Lin, Chih‐Hsien Cheng, Yu‐Chieh Chi, Sze Yun Set, Shinji Yamashita , et al. · 2022

A low-temperature plasma-enhanced chemical vapor deposition grown germanium (Ge) thin-film is employed as a nonlinear saturable absorber (SA). This Ge SA can passively mode-lock the erbium-doped fiber laser (EDFL) for soliton generation at…

Overall Non-Mechanical Spectrally Steered LiDAR Using Chirped Amplitude-Modulated Phase-Shift Method Open

Zheyuan Zhang, Chao Zhang, Takuma Shirahata, Shinji Yamashita, Sze Yun Set · 2021

We propose and demonstrate an overall non-mechanical spectrally steered laser rangefinder using the dispersion-tuned swept laser (DTSL) and a passive diffractive element. The DTSL has no mechanical moving parts, making it possible to achie…

SWCNT@BNNT With 1D Van Der Waals Heterostructure With a High Optical Damage Threshold for Laser Mode-Locking Open

Zheyuan Zhang, Pengtao Yuan, Shoko Yokokawa, Yongjia Zheng, Anton S. Anisimov , et al. · 2021

Single-walled carbon nanotube encapsulated in boron nitrite nanotube (SWCNT@BNNT) is a novel nanomaterial with a one-dimensional van der Waals (1D-vdW) heterostructure. In this paper, we demonstrated that the SWCNT@BNNT has an enhanced opt…

Design of a passively mode-locking whispering gallery mode microaser Open

Tomoki Suzuki, Ayata Nakashima, Keigo Nagashima, Rammaru Ishida, Riku Imamura , et al. · 2021

Ultrahigh repetition rate lasers will become vital light sources for many future technologies; however, their realization is challenging because the cavity size must be minimized. Whispering-gallery-mode (WGM) microresonators are attractiv…

Fiber-based dynamically tunable Lyot filter for dual-wavelength and tunable single-wavelength mode-locking of fiber lasers Open

Yuanjun Zhu, Zekun Cui, Xiangnan Sun, Takuma Shirahata, Lei Jin , et al. · 2020

We propose and demonstrate a novel dynamically tunable fiber-based Lyot filter for the realization of a dual-wavelength mode-locked fiber laser, operating at center wavelengths of 1535 nm and 1564 nm. The same laser cavity can also be oper…

Characterization of cascaded forward Brillouin scattering seeded by backward stimulated Brillouin scattering in optical fibers Open

Neisei Hayashi, Yosuke Mizuno, Heeyoung Lee, Kentaro Nakamura, Sze Yun Set , et al. · 2020

We present a method for generating cascaded forward Brillouin scattering (CFBS) on the basis of a counter-propagated pump-probe technique with backward stimulated Brillouin scattering used as its seed. The CFBS, induced by forward stimulat…

Passively mode-locked thulium-doped all-fiber laser based on low V number fiber bending Open

Hongbo Jiang, Yun-Peng Huang, Zihao Zhao, Lei Jin, Shinji Yamashita , et al. · 2020

This paper describes a mode locking technique based on enhanced polarization dependent loss (PDL). The method utilizes a bent single mode fiber (SMF28) coil to induce sufficient PDL at 2 \(μ\)m wavelength region. Significant PDL in SMF28 c…

Sze Yun Set YOU? Author Swipe