Measurement of mode times of flight in multimode fibers by an interferometric method using polychromatic light: theoretical approach and experimental results

Gerald Brun; Isabelle Verrier; Marie Ramos; Jean-Pierre Goure; Paul Ottavi; Anne-Marie Lambert

doi:10.1364/AO.35.001129

Applied Optics
Vol. 35,
Issue 7,
pp. 1129-1134
(1996)
•https://doi.org/10.1364/AO.35.001129

Measurement of mode times of flight in multimode fibers by an interferometric method using polychromatic light: theoretical approach and experimental results

Gerald Brun, Isabelle Verrier, Marie Ramos, Jean-Pierre Goure, Paul Ottavi, and Anne-Marie Lambert

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Gerald Brun, Isabelle Verrier, Marie Ramos, Jean-Pierre Goure, Paul Ottavi, and Anne-Marie Lambert, "Measurement of mode times of flight in multimode fibers by an interferometric method using polychromatic light: theoretical approach and experimental results," Appl. Opt. 35, 1129-1134 (1996)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Abstract

The propagation of several modes in an optical fiber is not easy to study. The experiment that we propose permits us to measure the difference in time propagation between two successive modes of a multimode fiber. The same laser beam is coupled into the fiber to be tested and into the reference single-mode fiber. The correlation of output electric fields of the modes propagated by each fiber is realized by an interferometric system.

Full Article | PDF Article

More Like This

Distributed loss and mode coupling and their effect on time-dependent propagation in multimode fibers

Michael J. Yadlowsky and Alan R. Mickelson
Appl. Opt. 32(33) 6664-6677 (1993)

Impact and vibration detection in composite materials by using intermodal interference in multimode optical fibers

Abdelrafik Malki, Rachid Gafsi, Laurent Michel, Michel Labarrère, and Pierre Lecoy
Appl. Opt. 35(25) 5198-5201 (1996)

Time-and-spatial-multiplexing tree topology for fiber-optic Bragg-grating sensors with interferometric wavelength-shift detection

A. B. Lobo Ribeiro, Y. J. Rao, L. Zhang, I. Bennion, and D. A. Jackson
Appl. Opt. 35(13) 2267-2273 (1996)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (14)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Parameters	Values
Length L	1.00 m
Core index n _c	1.45627
Cladding index n _g	1.45132
Core radius a _R	1.4 μm
Normalized frequency (V ₀)_R	1.5993
Normalized propagation constant of the LP₀₁ mode B ₀ = (B ₀₁)_R	0.2698
Propagation constant of the LP₀₁ mode β₀ = (β₀₁)_R	1.3829 10⁷ m⁻¹
Propagation time of the LP₀₁ mode τ₀ = (τ₀₁)_R	4.91882 ns

Parameters	Values
Length L	1.00 m
Core index n _c	1.45627
Cladding index n _g	1.45132
Core radius a _T	2.761 μm
Normalized frequency (V ₀)_T	2.7417
Normalized propagation constant of the LP ₀₁ mode B ₁ = (B ₀₁)_T	0.6052
Normalized propagation constant of the LP ₁₁ mode B ₂ = (B ₁₁)_T	0.0946
Propagation constant of the LP₀₁ mode β₁ = (β₀₁)_T	1.3848 10⁷ m⁻¹
Propagation constant of the LP₁₁ mode β₂ = (β₁₁)_T	1.3827 10⁷ m⁻¹
Propagation time of the LP₀₁ mode τ₁ = (τ₀₁)_T	4.922532 ns
Propagation time of the LP₁₁ mode τ₂ = (τ₁₁)_T	4.92326 ns

Parameters	Values
Groove number per millimeter of the gratings	N ₀ = 150 grooves/mm
Central frequency of the explored bandwidth	v ₀ = 4.5454 10¹⁴ Hz
Central wavelength of the explored bandwidth	λ₀ = 660 nm
Light-frequency area	Δv = 1.38 10¹³ Hz
Light-wavelength area	Δλ = 20 nm
Angle of the incident ray on the grating for the central wavelength	θ₀ = 82.5°
Angle of the refracted ray with regard to the grating normal	θ₀′ = 63.18°
Parameter of conversion	Q = 1.4628 10⁻⁹ s m⁻¹
Delay time of the fundamental mode of the monomode fiber	τ₀ = 4.9139 ns
Delay time of the fundamental mode of the multimode fiber	τ₁ = 4.9176 ns
Delay time of the second mode of the multimode fiber	τ₂ = 4.9183 ns
Delay-time difference between the fundamental and the second mode of the multimode fiber	Δτ₁₂ = 736 fs

Parameters	Values
Length L	1.00 m
Core index n _c	1.45627
Cladding index n _g	1.45132
Core radius a _R	1.4 μm
Normalized frequency (V ₀)_R	1.5993
Normalized propagation constant of the LP₀₁ mode B ₀ = (B ₀₁)_R	0.2698
Propagation constant of the LP₀₁ mode β₀ = (β₀₁)_R	1.3829 10⁷ m⁻¹
Propagation time of the LP₀₁ mode τ₀ = (τ₀₁)_R	4.91882 ns

Parameters	Values
Length L	1.00 m
Core index n _c	1.45627
Cladding index n _g	1.45132
Core radius a _T	2.761 μm
Normalized frequency (V ₀)_T	2.7417
Normalized propagation constant of the LP ₀₁ mode B ₁ = (B ₀₁)_T	0.6052
Normalized propagation constant of the LP ₁₁ mode B ₂ = (B ₁₁)_T	0.0946
Propagation constant of the LP₀₁ mode β₁ = (β₀₁)_T	1.3848 10⁷ m⁻¹
Propagation constant of the LP₁₁ mode β₂ = (β₁₁)_T	1.3827 10⁷ m⁻¹
Propagation time of the LP₀₁ mode τ₁ = (τ₀₁)_T	4.922532 ns
Propagation time of the LP₁₁ mode τ₂ = (τ₁₁)_T	4.92326 ns

Abstract

Cited By

Figures (7)

Tables (3)

Equations (14)

Applied Optics