Distributed measurement of intermodal beat length in an elliptic-core two-mode fiber by Brillouin dynamic grating

Yong Hyun Kim; Kwang Yong Song

doi:10.1117/12.2059454

2 June 2014 Distributed measurement of intermodal beat length in an elliptic-core two-mode fiber by Brillouin dynamic grating

Yong Hyun Kim, Kwang Yong Song

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91573S (2014) https://doi.org/10.1117/12.2059454
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

Optical time-domain measurement and characterization of intermodal beat length in an elliptic-core two-mode fiber (ecore TMF) is demonstrated using Brillouin dynamic grating. A mode-selective coupler is used for selective launch and retrieval of different modes, and the operations of BDG for four different pairs of pump-probe (LP₀₁^x-LP11 ^x, LP₀₁ ^x-LP₁₁ ^y, LP₀₁ ^y-LP₁₁ ^x, LP₀₁ ^y-LP₁₁^y) are observed, representing a fine structure of modal birefringence in the e-core TMF. Distributed measurement of the BDG spectrum is performed for each pair of pump-probe with 1.5 m spatial resolution mapping the difference of the effective refractive indexes of spatial and polarization modes along a 75 m TMF.

Citation Download Citation

Yong Hyun Kim and Kwang Yong Song "Distributed measurement of intermodal beat length in an elliptic-core two-mode fiber by Brillouin dynamic grating", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91573S (2 June 2014); https://doi.org/10.1117/12.2059454

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available