Optical Label Recognition Using Tree-Structure Self-Routing Circuits Consisting of Asymmetric X-Junctions

Hiura, Hitoshi; Jouji, Narita; Goto, Nobuo

doi:10.1093/ietele/e90-c.12.2270

Cited by 27 publications

(6 citation statements)

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“…A similar system was also reported by Kurumida et al (Kurumida et al, 2006). On the other hand, Hiura et al also proposed an all-optical passive label recognition system for all the binary codes in binary PSK (BPSK) format (Hiura et al, 2006;Hiura et al, 2007b). The label recognition system consists of a tree-structure connection of passive waveguide components named as asymmetric X-junction coupler (Izutsu et al, 1982;Burns & Milton, 1975;Burns & Milton, 1980), and time gates.…”

Section: Introductionmentioning

confidence: 76%

Advances in Optical and Photonic Devices

Kim¹

2010

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The title of this book, Advances in Optical and Photonic Devices, encompasses a broad range of theory and applications which are of interest for diverse classes of optical and photonic devices. Unquestionably, recent successful achievements in modern optical communications and multifunctional systems have been accomplished based on composing "building blocks" of a variety of optical and photonic devices. Thus, the grasp of current trends and needs in device technology would be useful for further development of such a range of relative applications.The book is going to be a collection of the contemporary researches and developments of various devices and structures in the area of optics and photonics. It is composed of 17 excellent chapters covering fundamental theory, physical operation mechanisms, fabrication and measurement techniques, application examples. Besides, it contains comprehensive reviews of recent trends and advancements in the field. First six chapters are especially focused on diverse aspects of recent developments of lasers and related technologies, while the later chapters deal with various optical and photonic devices including waveguides, filters, oscillators, isolators, photodiodes, photomultipliers, microcavities, and so on. Although the book is a collected edition of specific technological issues, I strongly believe that the readers can obtain generous and overall ideas and knowledge of the state-of-the-art technologies in optical and photonic devices.Lastly, special words of thanks should go to all the scientists and engineers who have devoted a great deal of time to writing excellent chapters in this book.

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Section: Introductionmentioning

confidence: 76%

Advances in Optical and Photonic Devices

Kim¹

2010

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“…However, waveguide-type wavelength-independent couplers have advantage from the viewpoint of integrating the switch elements. An alternative for improving wavelength dependence is to replace the directional couplers by asymmetric X-junction couplers (Izutsu et al, 1982;Burns & Milton, 1980;Hiura et al, 2007). The asymmetric X-junction coupler has basically no dependence on wavelength and helps to improve the wavelength dependency of the proposed switch (Kishikawa et al, 2009a;Kishikawa et al, 2009b).…”

Section: Improvement Of Wavelength Dependencymentioning

confidence: 99%

All-Optical Wavelength-Selective Switch by Intensity Control in Cascaded Interferometers

Kishikawa¹,

Goto²,

Kimiya³

2010

Frontiers in Guided Wave Optics and Optoelectronics

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“…We have proposed a passive waveguide circuit to recognize all BPSK coded labels [11], [12]. The device consists of a tree-structure connection of asymmetric X-junction couplers [13].…”

Section: Introductionmentioning

confidence: 99%

Increase of Recognizable Label Number with Optical Passive Waveguide Circuits for Recognition of Encoded 4- and 8-Bit BPSK Labels

Kishikawa

Ihara

Goto

et al. 2017

IEICE Trans. Electron.

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Optical label processing is expected to reduce power consumption in label switching network nodes. Previously, we proposed passive waveguide circuits for the recognition of BPSK labels with a theoretically infinite contrast ratio. The recognizable label number was limited to four and eight for 4-bit and 8-bit BPSK labels, respectively. In this paper, we propose methods to increase the recognizable label number. The proposed circuits can recognize eight and sixteen labels of 4-bit BPSK codes with a contrast ratio of 4.00 and 2.78, respectively. As 8-bit BSPK codes, 64, 128, and 256 labels can be recognized with a contrast ratio of 4.00, 2.78, and 1.65, respectively. In recognition of all encoded labels, that is, 16 and 256 labels for 4-bit and 8-bit BPSK labels, a reference signal is employed to identify the sign of the optical output signals. The effect of phase deviation and loss along the optical waveguides of the devices is also discussed.

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Optical Label Recognition Using Tree-Structure Self-Routing Circuits Consisting of Asymmetric X-Junctions

Cited by 27 publications

References 0 publications

Advances in Optical and Photonic Devices

Advances in Optical and Photonic Devices

All-Optical Wavelength-Selective Switch by Intensity Control in Cascaded Interferometers

Increase of Recognizable Label Number with Optical Passive Waveguide Circuits for Recognition of Encoded 4- and 8-Bit BPSK Labels

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