Impact of FBG array embedded on/in helix support rods on TWT performance

Author

Jin Zhang ; Feng Wang ; Huiyu Yuan ; Pu Wei ; Xiaohan Sun ; Yanmei Wang ; Bo Chen ; Jinjun Feng ; Tiechang Yan

Author_Institution

Res. Center for Electron. Device & Syst. Reliability, Southeast Univ., Nanjing, China

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

In order to obtain the temperature distribution along inner helix of working TWTs, fiber Bragg grating array (FBGA) can be considered to be used in testing the temperature. Two testing methods based on FBGA embedded on/in support rod helix structure are proposed. The influence of the FBGA on beam-wave interaction is analyzed through CST. The results show that the structure with FBGA embedded in support rods doesn´t significantly reduce the saturated output power and can suppress the backward wave oscillation (BWO) power hole.

Keywords

Bragg gratings; fibre optic sensors; temperature sensors; travelling wave tubes; FBG array; backward wave oscillation suppression; beam-wave interaction; fiber Bragg grating array; helix support rods; inner helix; temperature distribution; temperature testing; travelling wave tube performance; Arrays; Fiber gratings; Power amplifiers; Power generation; Simulation; Temperature distribution; fiber Bragg grating array (FBGA); helix TWT; temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Conference_Location

Beijing

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7224047

Filename

7224047