Fiber length stabilization system for long-baseline phased-array radio telescopes (ALMA)

Author

Musha, Mitsuru ; Nakagawa, Ken Ichi ; Ueda, Ken-ichi ; Ishiguro, Masato ; Ueda, Akitoshi

Author_Institution

Inst. for laser Sci., Univ. of electro-Commun., Chofu

fYear

2008

fDate

4-9 May 2008

Firstpage

1

Lastpage

2

Abstract

Wepsilave developed local oscillator dissemination system for ALMA. The high-purity 120 GHz local oscillator was delivered as a heterodyne beat signal over 25 km through length corrected optical fibers with phase fluctuation of 10^-2 radian.

Keywords

antenna phased arrays; fluctuations; heterodyne detection; millimetre wave antenna arrays; millimetre wave oscillators; optical fibre testing; optical information processing; optical signal detection; radiotelescopes; distance 25 km; fiber length stabilization system; frequency 120 GHz; heterodyne beat signal; length corrected optical fibers; local oscillator dissemination system; long-baseline phased-array radio telescopes; phase fluctuation; Fiber lasers; Fluctuations; Frequency; Light sources; Local oscillators; Optical fibers; Optical interferometry; Phase noise; Radio astronomy; Telescopes; (060.2300) fiber measurement; (060.2360) fiber optics links and subsystems;

fLanguage

English

Publisher

iet

Conference_Titel

Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on

Conference_Location

San Jose, CA

Print_ISBN

978-1-55752-859-9

Type

conf

Filename

4571490