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All-organic electro-optic waveguide modulator comprising SU-8 and nonlinear optical polymer.

Edgars Nitiss, Andrejs Tokmakovs, Kaspars Pudzs

|December 17, 2017

Summary

Researchers developed an all-organic waveguide modulator using SU-8 and electro-optic polymers. This device, fabricated with laser lithography, demonstrates tunable properties for single-mode operation and electro-optic coefficient estimation.

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Area of Science:

Optoelectronics
Materials Science
Polymer Science

Background:

Waveguide modulators are crucial components in optical communication systems.
All-organic devices offer potential advantages in terms of cost, flexibility, and processing.
SU-8 and host-guest polymers are suitable materials for integrated optics.

Purpose of the Study:

To describe the operational principles, fabrication, and testing of an all-organic waveguide modulator.
To tune polymer properties for single-mode operation.
To estimate the electro-optic coefficient of the polymer cladding.

Main Methods:

Fabrication of an SU-8 core and electro-optic polymer cladding.
Tuning of polymer properties for single-mode guidance.
Two-step direct-write laser lithography for device preparation.
Device testing in push-pull mode to observe modulation.

Main Results:

Successful fabrication of an all-organic waveguide modulator.
Achieved single-mode operation through polymer property tuning.
Estimated the electro-optic coefficient of the polymer using modulation measurements.

Conclusions:

The developed all-organic waveguide modulator is a viable device for optoelectronic applications.
Direct-write laser lithography is an effective method for fabricating such devices.
The study demonstrates a method for characterizing the electro-optic properties of polymer waveguides.