High precision wavelength estimation method for integrated optics

R.M. Oldenbeuving, H. Song, G. Schitter, M. Verhaegen, E.J. Klein, Christopher James Lee, Herman L. Offerhaus, Klaus J. Boller

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

A novel and simple approach to optical wavelength measurement is presented in this paper. The working principle is demonstrated using a tunable waveguide micro ring resonator and single photodiode. The initial calibration is done with a set of known wavelengths and resonator tunings. The combined spectral sensitivity function of the resonator and photodiode at each tuning voltage was modeled by a neural network. For determining the unknown wavelengths, the resonator was tuned with a set of heating voltages and the corresponding photodiode signals were collected. The unknown wavelength was estimated, based on the collected photodiode signals, the calibrated neural networks, and an optimization algorithm. The wavelength estimate method provides a high spectral precision of about 8 pm (5·10−6 at 1550 nm) in the wavelength range between 1549 nm to 1553 nm. A higher precision of 5 pm (3·10−6) is achieved in the range between 1550.3 nm to 1550.8 nm, which is a factor of five improved compared to a simple lookup of data. The importance of our approach is that it strongly simplifies the optical system and enables optical integration. The approach is also of general importance, because it may be applicable to all wavelength monitoring devices which show an adjustable wavelength response.
Original languageEnglish
Pages (from-to)17042-17052
JournalOptics express
Volume21
Issue number14
DOIs
Publication statusPublished - 15 Jul 2013

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integrated optics
wavelengths
photodiodes
resonators
tuning
electric potential
spectral sensitivity
waveguides
optimization
heating
rings
estimates

Cite this

Oldenbeuving, R. M., Song, H., Schitter, G., Verhaegen, M., Klein, E. J., Lee, C. J., ... Boller, K. J. (2013). High precision wavelength estimation method for integrated optics. Optics express, 21(14), 17042-17052. https://doi.org/10.1364/OE.21.017042
Oldenbeuving, R.M. ; Song, H. ; Schitter, G. ; Verhaegen, M. ; Klein, E.J. ; Lee, Christopher James ; Offerhaus, Herman L. ; Boller, Klaus J. / High precision wavelength estimation method for integrated optics. In: Optics express. 2013 ; Vol. 21, No. 14. pp. 17042-17052.
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Oldenbeuving, RM, Song, H, Schitter, G, Verhaegen, M, Klein, EJ, Lee, CJ, Offerhaus, HL & Boller, KJ 2013, 'High precision wavelength estimation method for integrated optics' Optics express, vol. 21, no. 14, pp. 17042-17052. https://doi.org/10.1364/OE.21.017042

High precision wavelength estimation method for integrated optics. / Oldenbeuving, R.M.; Song, H.; Schitter, G.; Verhaegen, M.; Klein, E.J.; Lee, Christopher James; Offerhaus, Herman L.; Boller, Klaus J.

In: Optics express, Vol. 21, No. 14, 15.07.2013, p. 17042-17052.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Oldenbeuving, R.M.

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AU - Offerhaus, Herman L.

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Oldenbeuving RM, Song H, Schitter G, Verhaegen M, Klein EJ, Lee CJ et al. High precision wavelength estimation method for integrated optics. Optics express. 2013 Jul 15;21(14):17042-17052. https://doi.org/10.1364/OE.21.017042