Group Delay Analysis of Chirped Fiber Bragg Gratings Using Photon Counting

de Riedmatten, Hugues; Wegmuller, Mark; Zbinden, Hugo; Gisin, Nicolas

doi:10.1109/68.924042

Scientific article

English

Group Delay Analysis of Chirped Fiber Bragg Gratings Using Photon Counting

Contributors

de Riedmatten, Hugues; Wegmuller, Mark; Zbinden, Hugo

; Gisin, Nicolas

Published in

IEEE photonics technology letters, vol. 13, no. 6, p. 615-617

Publication date

2001

Abstract

We present a novel measurement method for the relative group delay of chirped fiber Bragg gratings, based on the time-of-flight of single photons. In contrast to existing techniques, the light source is a pulsed broad-band LED. This simple and inexpensive source allows for measurements over a large spectral range with a high spectral resolution (8 pm) obtained from a tunable Fabry-Perot filter. The photons are detected by an InGaAs avalanche photodiode operated in photon-counting mode, resulting in a precision for the group delay of 15 ps. We observed an unusual asymmetry in the group delay curves of one of the commercial gratings measured with our method. This asymmetry can be qualitatively understood, taking into account a nonmonotonous variation of the grating period.

Keywords

Chirped Bragg gratings
Group delay asymmetry
Photon counting.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Groupe de physique appliquée

Citation (ISO format)

DE RIEDMATTEN, Hugues et al. Group Delay Analysis of Chirped Fiber Bragg Gratings Using Photon Counting. In: IEEE photonics technology letters, 2001, vol. 13, n° 6, p. 615–617. doi: 10.1109/68.924042

Article (Published version)

Identifiers

PID : unige:37019
DOI : 10.1109/68.924042

Additional URL for this publication

http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=924042

Journal ISSN

1041-1135

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30/10/2024 17:24:34

Group Delay Analysis of Chirped Fiber Bragg Gratings Using Photon Counting

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

Citation (ISO format)

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Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation