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Athermal Silicon Nitride Ring Resonator by Photobleaching of Disperse Red 1-doped Poly(methyl Methacrylate) Polymer

Athermal Silicon Nitride Ring Resonator by Photobleaching of Disperse Red 1-doped Poly(methyl Methacrylate) Polymer

Feng Qiu, Feng Yu, Andrew M Spring, Shiyoshi Yokoyama

Opt Lett. 2012 Oct 1;37(19):4086-8.

PMID: 23027287

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP103553486	Disperse Red 1 methacrylate		103553-48-6	Price
AP139096370	Poly(Disperse Red 1 methacrylate)		139096-37-0	Price

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