Broadband hitless silicon electro-optic switch for on-chip optical networks.

Area of Science:

• Photonics and Optical Engineering
• Integrated Optics
• Semiconductor Devices

Background:

• Wavelength division multiplexing (WDM) systems require efficient optical switching.
• Existing optical switches can suffer from spectral crosstalk and limited bandwidth.
• Compact and fast switching solutions are crucial for next-generation optical networks.

Purpose of the Study:

• To demonstrate a novel broadband electro-optical switch.
• To achieve spectrally hitless switching performance.
• To develop a compact and high-speed optical switching device.

Main Methods:

• Fabrication of a compact optical switch using two coupled resonant cavities.
• Integration of independently addressable PIN diodes for switch control.
• Characterization of the switch's performance at 60 GHz bandwidth.

Main Results:

• Demonstration of a broadband (60 GHz) electro-optical switch.
• Achieved spectrally hitless operation, preventing adjacent channel perturbation.
• Device exhibits a compact footprint (20 microm x 40 microm) and fast switching speed (7 ns).

Conclusions:

• The demonstrated electro-optical switch offers a promising solution for WDM systems.
• Its spectrally hitless and compact design enables efficient optical signal routing.
• The device's speed and bandwidth are suitable for advanced optical communication applications.