Browsing by Author "Chou, Gary"

Now showing 1 - 6 of 6

56 Gb/s OOK transmission in robust and bend-insensitive GGP 80-m ultra-large-core (ULC) MMF for lightpeak
(2015-03-01)
Chow, Chi-Wai
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Yang, Ling-Gang
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Sung, Jiun-Yu
;
Su, Hong-Quan
;
Yeh, Chien-Hung
We demonstrate for the first time a recorded 56-Gb/s transmission in a new type robust and bend-insensitive glass-glass-polymer structured 80-m ultra-large-core multimode fiber (ULCMMF) using simple and single-polarization on-off-keying for Lightpeak. The LCMMF design is presented. Experimental results show that the ULCMMF could be a good choice for consumer applications in the near future.
Bend and twist insensitive large core multimode fiber (LCMMF) for baseband and ROF in-home data transmission
(2013-05-01)
Chow, C. W.
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Yeh, C. H.
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Yang, L. G.
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Sung, J. Y.
;
Huang, S. P.
To extend the fiber access network into the home, using optical fiber is a good choice. Bend and twist insensitive optical fiber with a large core diameter is particularly attractive, since it is easy to install and connectorize. However, its bandwidth will be severely limited by its large multimodal dispersion. Here, we first reported the design and fabrication of a novel bend and twist insensitive, 80-mu m core-diameter large-core multimode fiber (LCMMF) for in-home data communication. We experimentally demonstrated 10 Gb/s multiple bands data transmission at distances for residential buildings and data centers. The bit-error-rate (BER) performances of the LCMMF under bending and twisting were evaluated. Finally, we also discovered experimentally an important relation between the differential-mode-delay (DMD) and the BER of the fabricated LCMMF. This relationship could be a valuable tool for fiber manufacturers. (C) 2012 Elsevier B.V. All rights reserved.
Design and characterization of large-core optical fiber for Light Peak applications
(2012-01-01)
Chow, Chi-Wai
;
Yeh, Chien-Hung
;
Yang, Ling-Gang
;
Sung, Jiun-Yu
;
Huang, Sung-Ping
Bandwidth demand for transferring data among different consumer electronic products is increasing rapidly. Due to issues of high propagation loss, electromagnetic interference, and limited bandwidth-distance product of the present copper-based electrical cables, consumer electronic devices may not provide the bandwidth required for future high-capacity applications. The Intel Corporation has proposed Light Peak technology, allowing data transfer between electronic devices at 10 Gb/s in optical domain. To establish a reliable Light Peak connection, robust optical fiber is highly required. In this paper, we discuss the fabrication and characterization of a new type of 80-mu m large-core optical fiber. We perform 10 Gb/s bit-error-rate measurements using 850 and 1550-nm transceivers. The results show that even though we have enlarged the fiber core diameter by 60% (from 50 to 80 mu m) in order to increase the laser-to-fiber alignment tolerance, transmission bandwidth and distance required by Light Peak can still be achieved in this new type of large-core optical fiber. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.1.015006]
Design and characterization of large-core optical fiber for Light Peak applications
(2012-01-01)
Chow, Chi-Wai
;
Yeh, Chien-Hung
;
Yang, Ling-Gang
;
Sung, Jiun-Yu
;
Huang, Sung-Ping
Bandwidth demand for transferring data among different consumer electronic products is increasing rapidly. Due to issues of high propagation loss, electromagnetic interference, and limited bandwidth-distance product of the present copper-based electrical cables, consumer electronic devices may not provide the bandwidth required for future high-capacity applications. The Intel Corporation has proposed Light Peak technology, allowing data transfer between electronic devices at 10 Gb/s in optical domain. To establish a reliable Light Peak connection, robust optical fiber is highly required. In this paper, we discuss the fabrication and characterization of a new type of 80-mu m large-core optical fiber. We perform 10 Gb/s bit-error-rate measurements using 850 and 1550-nm transceivers. The results show that even though we have enlarged the fiber core diameter by 60% (from 50 to 80 mu m) in order to increase the laser-to-fiber alignment tolerance, transmission bandwidth and distance required by Light Peak can still be achieved in this new type of large-core optical fiber. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.1.015006]
Low bending loss square-core optical fiber for optical communication
(2015-01-01)
Liu, P. F.
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Sung, J. Y.
;
Chow, C. W.
;
Yeh, C. H.
;
Chou, Gary
In this work, we propose and demonstrate a single-mode square-core optical fiber for optical communications. In the proposed square-core single-mode-fiber (SC-SMF), high bandwidth-distance product and low bending loss can be achieved. In this paper, first of all, we discuss the single mode condition of the SC-SMF theoretically and numerically. Then, we discuss the fabrication of the SC-SMF. We also characterize the performances of the proposed SC-SMF, such as the bending loss, and compare it with the standard single mode fiber (SSMF). A 10 Gb/s transmission experiment using 200 m, 500 m and 1 km SC-SMFs are performed. Negligible power penalty is observed.
Square-core single-mode-fiber (SC-SMF) with high bending tolerance for data center networks
(2015-08-15)
Chow, C. W.
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Huang, S. P.
;
Yeh, C. H.
;
Sung, J. Y.
;
Liu, P. F.
Square-core optical fiber has been proposed recently for high optical power delivery in industrial processing tools with core size larger than 400 x 400 mu m(2). In this work, we first study the possibility of significantly reducing the core side to single-mode condition (i.e. 9 x 9 mu m(2)) at optical communication wavelength. In the proposed square-core single-mode-fiber (SC-SMF), high bandwidth-distance product and low bending loss are achieved. We also discuss the fabrication of the SC-SMF. After this, the bending losses of the SC-SMF and standard single mode fiber (SSMF) are analyzed and compared. Finally, 10 Gb/s signal transmission using conventional on-off keying (OOK) and orthogonal frequency division multiplexing (OFDM) passing through 200 m, 500 m and 1 km SC-SMFs are performed. Negligible power penalty is observed. We believe that this can be another choice of high bending tolerance fiber which is simple to manufacture. (C) 2015 Elsevier B.V. All rights reserved.