Impact of cascaded filters-based OADMs in an all optical backbone network/Influence des multiplexeurs d’insertion-extraction optiques, fondés sur des filtres en cascade, sur un réseau dorsal entièrement optique

Irène Joindot; Michel Joindot

doi:10.1007/bf03253276

Impact of cascaded filters-based OADMs in an all optical backbone network/Influence des multiplexeurs d’insertion-extraction optiques, fondés sur des filtres en cascade, sur un réseau dorsal entièrement optique

annals of telecommunications - annales des télécommunications ◽

10.1007/bf03253276 ◽

2007 ◽

Vol 62 (5-6) ◽

pp. 550-566

Author(s):

Irène Joindot ◽

Michel Joindot

Keyword(s):

Backbone Network ◽

All Optical ◽

Cascaded Filters

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Correlation analysis of radiation damage

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100108210 ◽

1978 ◽

Vol 36 (1) ◽

pp. 214-215

Author(s):

R. Hegerl ◽

A. Feltynowski ◽

B. Grill

Keyword(s):

Electron Microscopy ◽

Independent Random Variables ◽

Optical Parameters ◽

Bright Field Image ◽

Bright Field ◽

Expectation Value ◽

All Optical ◽

Image Element ◽

Stochastic Series ◽

The Common

Till now correlation functions have been used in electron microscopy for two purposes: a) to find the common origin of two micrographs representing the same object, b) to check the optical parameters e. g. the focus. There is a third possibility of application, if all optical parameters are constant during a series of exposures. In this case all differences between the micrographs can only be caused by different noise distributions and by modifications of the object induced by radiation.Because of the electron noise, a discrete bright field image can be considered as a stochastic series Pm,where i denotes the number of the image and m (m = 1,.., M) the image element. Assuming a stable object, the expectation value of Pm would be Ηm for all images. The electron noise can be introduced by addition of stationary, mutual independent random variables nm with zero expectation and the variance. It is possible to treat the modifications of the object as a noise, too.

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