Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material

Soha Namnabat, Kyung Jo Kim, Adam Jones, Roland Himmelhuber, Christopher T. Derose, Douglas C. Trotter, Andrew L. Starbuck, Andrew Pomerene, Anthony L. Lentine, Robert A. Norwood

Research output: Research - peer-reviewArticle

Abstract

Silicon photonics has gained interest for its potential to provide higher efficiency, bandwidth and reduced power consumption compared to electrical interconnects in datacenters and high performance computing environments. However, it is well known that silicon photonic devices suffer from temperature fluctuations due to silicon's high thermo-optic coefficient and therefore, temperature control in many applications is required. Here we present an athermal optical add-drop multiplexer fabricated from ring resonators.We used a sol-gel inorganic-organic hybrid material as an alternative to previously used materials such as polymers and titanium dioxide. In this work we studied the thermal curing parameters of the sol-gel and their effect on thermal wavelength shift of the rings. With this method, we were able to demonstrate a thermal shift down to -6.8 pm/°C for transverse electric (TE) polarization in ring resonators with waveguide widths of 325 nm when the sol-gel was cured at 130°C for 10.5 hours. We also achieved thermal shifts below 1 pm/°C for transverse magnetic (TM) polarization in the C band under different curing conditions. Curing time compared to curing temperature shows to be the most important factor to control sol-gel's thermo-optic value in order to obtain an athermal device in a wide temperature range.

LanguageEnglish (US)
Pages21471-21482
Number of pages12
JournalOptics Express
Volume25
Issue number18
DOIs
StatePublished - Sep 4 2017

Fingerprint

curing
multiplexing
tuning
gels
optics
silicon
coefficients
rings
shift
temperature
resonators
photonics
polarization
temperature control
C band
dioxides
titanium oxides
waveguides
bandwidth
polymers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Namnabat, S., Kim, K. J., Jones, A., Himmelhuber, R., Derose, C. T., Trotter, D. C., ... Norwood, R. A. (2017). Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material. Optics Express, 25(18), 21471-21482. DOI: 10.1364/OE.25.021471

Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material. / Namnabat, Soha; Kim, Kyung Jo; Jones, Adam; Himmelhuber, Roland; Derose, Christopher T.; Trotter, Douglas C.; Starbuck, Andrew L.; Pomerene, Andrew; Lentine, Anthony L.; Norwood, Robert A.

In: Optics Express, Vol. 25, No. 18, 04.09.2017, p. 21471-21482.

Research output: Research - peer-reviewArticle

Namnabat, S, Kim, KJ, Jones, A, Himmelhuber, R, Derose, CT, Trotter, DC, Starbuck, AL, Pomerene, A, Lentine, AL & Norwood, RA 2017, 'Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material' Optics Express, vol 25, no. 18, pp. 21471-21482. DOI: 10.1364/OE.25.021471
Namnabat S, Kim KJ, Jones A, Himmelhuber R, Derose CT, Trotter DC et al. Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material. Optics Express. 2017 Sep 4;25(18):21471-21482. Available from, DOI: 10.1364/OE.25.021471
Namnabat, Soha ; Kim, Kyung Jo ; Jones, Adam ; Himmelhuber, Roland ; Derose, Christopher T. ; Trotter, Douglas C. ; Starbuck, Andrew L. ; Pomerene, Andrew ; Lentine, Anthony L. ; Norwood, Robert A./ Athermal silicon optical add-drop multiplexers based on thermo-optic coefficient tuning of sol-gel material. In: Optics Express. 2017 ; Vol. 25, No. 18. pp. 21471-21482
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