High-bandwidth graded-index polymer optical fiber enabling power penalty-free gigabit data transmission
- T. Ishigure, K. Makino, S. Tanaka, Y. Koike
- Physics
- 1 November 2003
A relation between the -3 dB bandwidths of graded-index plastic optical fibers (GI POFs) and the total power penalty of 50-m GI POF links is investigated in detail. The bandwidth of the GI POF is…
Intrinsic transmission bandwidths of graded-index plastic optical fibers.
It is shown that microscopic heterogeneous properties can enhance the transmission bandwidths of graded-index plastic optical fibers for short-haul communication networks by modifying the coupled power equation with consideration of the spatial correlation characteristics of the heterogeneities.
Low Loss and High Bandwidth Polystyrene-Based Graded Index Polymer Optical Fiber
- K. Makino, Y. Akimoto, K. Koike, A. Kondo, A. Inoue, Y. Koike
- Physics, Materials ScienceJournal of Lightwave Technology
- 15 July 2013
Polystyrene (PS) was selected as a costless polymer matrix for graded index polymer optical fibers (GI POFs) with low attenuation at a wavelength of 670 nm. However, fabricated PS-based GI POFs…
Efficient group delay averaging in graded-index plastic optical fiber with microscopic heterogeneous core.
It was numerically demonstrated that efficient group-delay averaging due to intrinsic mode coupling brings the pronounced bandwidth enhancement in fibers with much shorter length than the case of glass multimode fibers.
Development of InGaAs MPPC for NIR photon counting applications
- Yusei Tamura, Yoshihito Suzuki, Koei Yamamoto
- PhysicsOPTO
- 22 February 2018
An InGaAs Multi-Pixel Photon Counter (MPPC) has been developed for detecting the near-infrared and shortwave infrared wavelength. Numerous studies were made to develop silicon-based photomultipliers…
Development of an InGaAs SPAD 2D array for flash LIDAR
- T. Baba, Yoshihito Suzuki, Koei Yamamoto
- PhysicsOPTO
- 26 January 2018
An InGaAs Single-Photon Avalanche Photodiode (SPAD) array and a hybrid photon-counting image sensor have been developed for time-resolved applications in the near infrared region, especially for…
Poly(styrene)-based graded-index plastic optical fiber for home networks.
- Y. Akimoto, M. Asai, K. Koike, K. Makino, Y. Koike
- PhysicsOptics Letters
- 1 June 2012
This study selected a dibenzothiophene (DBT) as a dopant to PSt, and fabricated PSt-DBT-based GI-POF, which has high bandwidth and low loss and satisfied the requirements for home networks.
Waveguide parameter design of graded-index plastic optical fibers for bending-loss reduction
- K. Makino, T. Ishigure, Y. Koike
- PhysicsJournal of Lightwave Technology
- 1 May 2006
The waveguide structure of graded-index plastic optical fibers (GI POFs), such as index profile, numerical aperture (NA), and core diameter, is appropriately designed for eliminating bending losses,…
Low loss graded index polymer optical fiber with high stability under damp heat conditions.
- K. Makino, Takahiro Kado, A. Inoue, Y. Koike
- PhysicsOptics Express
- 4 June 2012
The copolymer based GI POF can provide an inexpensive premise network with long-term stability and no loss increment is observed under damp heat conditions of 75°C and 85% relative humidity when using 9-bromo phenanthrene as the high refractive index dopant required to form the GI profile.
Analysis of graded-index polymer optical fiber link performance under fiber bending
- K. Makino, T. Nakamura, T. Ishigure, Y. Koike
- PhysicsJournal of Lightwave Technology
- 1 June 2005
Bending effects on bandwidth and loss of a graded-index polymer optical fiber (GI POF) were investigated, and those influences on the optical link performance were discussed simultaneously for the…
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