Athermal silicon nitride ring resonator by photobleaching of Disperse Red 1-doped poly(methyl methacrylate) polymer

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

To fabricate athermal silicon nitride waveguides, the dimensions of both the core and cladding, refractive index, and thermo-optic coefficients must be controlled precisely. We present a simple and effective method for the postfabrication trimming of silicon nitride ring resonators that overcomes the highly demanding fabrication. In order to manipulate the polymer's refractive index and thermo-optic coefficient, we bleached the Disperse Red 1-doped poly(methyl methacrylate) (DR1/PMMA) top cladding using UV irradiation. After a suitable bleaching time, the temperature-dependent wavelength shift of the ring resonator was reduced from -9.8 to -0.018 pm/°C, which is the lowest shift that we are aware of for an athermal waveguide realized by overlaying a polymer cladding to date.

Original languageEnglish
Pages (from-to)4086-4088
Number of pages3
JournalOptics Letters
Volume37
Issue number19
DOIs
Publication statusPublished - Oct 1 2012

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polymethyl methacrylate
silicon nitrides
resonators
rings
polymers
optics
refractivity
waveguides
shift
bleaching
coefficients
fabrication
irradiation
wavelengths
temperature

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Athermal silicon nitride ring resonator by photobleaching of Disperse Red 1-doped poly(methyl methacrylate) polymer. / Qiu, Feng; Yu, Feng; Spring, Andrew Mark; Yokoyama, Shiyoshi.

In: Optics Letters, Vol. 37, No. 19, 01.10.2012, p. 4086-4088.

Research output: Contribution to journalArticle

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