Interference Cancellation for Hollow-Core Fiber Reference Cells

Jeremias Seppä, Mikko Merimaa, Albert Manninen, Marco Triches, Jan Hald, Antti Lassila

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Doppler-free saturated absorption spectroscopy of gases in hollow-core fiber (HCF)-based cells can be used for realizing new compact, robust, and portable frequency standards. In this paper, methods for cancelling interferences resulting from the optical connections between standard fiber and HCF and other factors such as varying coupling to HCF modes are investigated. Laser power modulation with simultaneous detection of ac and dc signal is used to separate saturated absorption from interferences. In addition, a technique of two piezoelectric stack actuators stretching the fiber at different locations is described. The presented experimental results demonstrate that 99% interference attenuation is readily attainable with the techniques. Frequency comb-referenced measurement of saturated acetylene absorption features near 1.54 μm, with fiber length and power modulation, is presented. For comparison, measurements and results of the same acetylene fiber, using a system having pump and probe beams at mutually shifted frequencies, are also given.

Original languageEnglish
Article number7060653
Pages (from-to)1595-1599
Number of pages5
JournalIEEE Transactions on Instrumentation and Measurement
Volume64
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

cancellation
hollow
interference
fibers
Fibers
cells
Acetylene
acetylene
Modulation
modulation
Frequency standards
frequency standards
Laser modes
Absorption spectroscopy
Stretching
absorption spectroscopy
Actuators
actuators
attenuation
Pumps

Keywords

  • Frequency measurement standards
  • infrared spectra
  • interference cancellation
  • measurement techniques
  • metrology
  • optical fiber
  • spectroscopy

Cite this

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title = "Interference Cancellation for Hollow-Core Fiber Reference Cells",
abstract = "Doppler-free saturated absorption spectroscopy of gases in hollow-core fiber (HCF)-based cells can be used for realizing new compact, robust, and portable frequency standards. In this paper, methods for cancelling interferences resulting from the optical connections between standard fiber and HCF and other factors such as varying coupling to HCF modes are investigated. Laser power modulation with simultaneous detection of ac and dc signal is used to separate saturated absorption from interferences. In addition, a technique of two piezoelectric stack actuators stretching the fiber at different locations is described. The presented experimental results demonstrate that 99{\%} interference attenuation is readily attainable with the techniques. Frequency comb-referenced measurement of saturated acetylene absorption features near 1.54 μm, with fiber length and power modulation, is presented. For comparison, measurements and results of the same acetylene fiber, using a system having pump and probe beams at mutually shifted frequencies, are also given.",
keywords = "Frequency measurement standards, infrared spectra, interference cancellation, measurement techniques, metrology, optical fiber, spectroscopy",
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Interference Cancellation for Hollow-Core Fiber Reference Cells. / Seppä, Jeremias; Merimaa, Mikko; Manninen, Albert; Triches, Marco; Hald, Jan; Lassila, Antti.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 64, No. 6, 7060653, 01.06.2015, p. 1595-1599.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Interference Cancellation for Hollow-Core Fiber Reference Cells

AU - Seppä, Jeremias

AU - Merimaa, Mikko

AU - Manninen, Albert

AU - Triches, Marco

AU - Hald, Jan

AU - Lassila, Antti

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Doppler-free saturated absorption spectroscopy of gases in hollow-core fiber (HCF)-based cells can be used for realizing new compact, robust, and portable frequency standards. In this paper, methods for cancelling interferences resulting from the optical connections between standard fiber and HCF and other factors such as varying coupling to HCF modes are investigated. Laser power modulation with simultaneous detection of ac and dc signal is used to separate saturated absorption from interferences. In addition, a technique of two piezoelectric stack actuators stretching the fiber at different locations is described. The presented experimental results demonstrate that 99% interference attenuation is readily attainable with the techniques. Frequency comb-referenced measurement of saturated acetylene absorption features near 1.54 μm, with fiber length and power modulation, is presented. For comparison, measurements and results of the same acetylene fiber, using a system having pump and probe beams at mutually shifted frequencies, are also given.

AB - Doppler-free saturated absorption spectroscopy of gases in hollow-core fiber (HCF)-based cells can be used for realizing new compact, robust, and portable frequency standards. In this paper, methods for cancelling interferences resulting from the optical connections between standard fiber and HCF and other factors such as varying coupling to HCF modes are investigated. Laser power modulation with simultaneous detection of ac and dc signal is used to separate saturated absorption from interferences. In addition, a technique of two piezoelectric stack actuators stretching the fiber at different locations is described. The presented experimental results demonstrate that 99% interference attenuation is readily attainable with the techniques. Frequency comb-referenced measurement of saturated acetylene absorption features near 1.54 μm, with fiber length and power modulation, is presented. For comparison, measurements and results of the same acetylene fiber, using a system having pump and probe beams at mutually shifted frequencies, are also given.

KW - Frequency measurement standards

KW - infrared spectra

KW - interference cancellation

KW - measurement techniques

KW - metrology

KW - optical fiber

KW - spectroscopy

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DO - 10.1109/TIM.2015.2408800

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JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

SN - 0018-9456

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