The Major Physical Layer Constraints of Fiber Optical fiber Packet Switch Architectures

Abstract Optical packet switching has gained lot of popularity in last a few years due to its advantages like, large speed, more bandwidth and very less crosstalk. But due to immature optical fabrication and designing technology OPS is still beyond reality. However, many of the optical components are commercialized and some of them are still in laboratory. Thus, for optical switches which are considered as future generation routers, many switch architectures are proposed by using different sets of optical components. This paper presents a detailed review of notable switch designs in past 20 years, and also presents a comprehensive literature survey of the notable papers related to optical packet switch designs.

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Fast packet switch architectures for broadband integrated services digital networks

Proceedings of the IEEE ◽

10.1109/5.52203 ◽

1990 ◽

Vol 78 (1) ◽

pp. 133-167 ◽

Cited By ~ 311

Author(s):

F.A. Tobagi

Keyword(s):

Integrated Services ◽

Digital Networks ◽

Switch Architectures ◽

Packet Switch

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Optical packet switch architectures for ultrahigh-speed networks

10.1117/12.636491 ◽

2005 ◽

Cited By ~ 1

Author(s):

M. J. O'Mahony ◽

Dimitris Klonidis ◽

Christina Politi ◽

Reza Negabati ◽

Dimitra Simeonidou

Keyword(s):

Optical Packet Switch ◽

Switch Architectures ◽

Packet Switch

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Two Fiber Optical Fiber Thermometry

10.1115/imece2000-1421 ◽

2000 ◽

Author(s):

Matthew R. Jones ◽

Jeffery T. Farmer ◽

Shawn P. Breeding

Keyword(s):

Optical Fiber ◽

Elevated Temperatures ◽

Systematic Errors ◽

Radiative Flux ◽

Metallic Coating ◽

Temperature Measurements ◽

Single Fiber ◽

Random Errors ◽

Fiber Optical

Abstract An optical fiber thermometer consists of an optical fiber whose sensing tip is given a metallic coating. The sensing tip of the fiber forms an isothermal cavity, and the emission from this cavity is approximately equal to the emission from a blackbody. Temperature readings are obtained by measuring the spectral radiative flux at the end of the fiber at two wavelengths. The ratio of these measurements is used to infer the temperature at the sensing tip. However, readings from optical fiber thermometers are corrupted by emission from the fiber when extended portions of the probe are exposed to elevated temperatures. This paper describes several ways in which the reading from a second fiber can be used to correct the corrupted temperature measurements. It is shown that two of the correction methods result in significant reductions in the systematic errors. However, these methods are sensitive to random errors, so it is preferable to use a single fiber OFT if the uncertainties in the measurements are large.

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