Low noise optical link development at INRIM

Author

Mura, A. ; Bastida, K. ; Clivati, C. ; Levi, F. ; Calonico, D. ; Lorini, Luca ; Costanzo, Giovanni A. ; Godone, Aldo

Author_Institution

I.N.Ri.M.-Ist. Naz. di Ricerca Metrol., Turin, Italy

fYear

2010

fDate

13-16 April 2010

Firstpage

1

Lastpage

7

Abstract

At the beginning of 2009 INRIM, the Italian metrological laboratory, started a research activity in order to realize a low noise optical link. Two telecom fiber lasers at 1550 nm have been locked on two independent notched ultralow expansion glass (ULE) Fabry-Pérot cavities. We present the thermal stabilization system, and report the finite-element analysis (FEA) made to precisely determinate the positions of the cavity supports. The sensitivity of optical axes length to acceleration is found to be less than 4.5 pm/g. Two different commercial lasers are stabilized by a Pound-Drever-Hall (PDH) technique and a stability of 6×10^-14 is achieved at 1 s. Finally, the experimental set-up for the optical link is described and a first noise cancellation result on a 25 km long fiber is reported.

Keywords

Fabry-Perot interferometers; fibre lasers; finite element analysis; interference suppression; laser cavity resonators; laser noise; laser stability; optical communication equipment; optical fibre networks; optical glass; optical links; thermal stability; FEA; Fabry-Perot cavity; INRIM; Italian metrological laboratory; Pound-Drever-Hall technique; acceleration; finite element analysis; laser stability; noise cancellation; noise optical link development; notched ULE; optical axes length sensitivity; telecom fiber laser; thermal stabilization system; ultralow expansion glass;

fLanguage

English

Publisher

ieee

Conference_Titel

EFTF-2010 24th European Frequency and Time Forum

Conference_Location

Noordwijk

Print_ISBN

978-1-4673-5970-2

Type

conf

DOI

10.1109/EFTF.2010.6533717

Filename

6533717