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Path-reversed substrate- guided-wave optical interconnects for wavelength-division demultiplexing
1Department of Electrical and Computer Engineering, Microelectronics Research Center, University of Texas at Austin, Texas 78758, USA.
Applied Optics
|March 6, 2008
Summary
This study presents a novel holographic interconnection for wavelength-division demultiplexing. The developed device achieves four-channel demultiplexing with no crosstalk and demonstrates a twenty-fan-out capability.
Area of Science:
- Optoelectronics
- Holographic data storage
- Waveguide optics
Background:
- Wavelength-division multiplexing (WDM) is crucial for high-capacity optical communication.
- Existing WDM technologies face challenges in miniaturization and fan-out capabilities.
- Holographic interconnections offer a potential solution for compact and efficient WDM devices.
Purpose of the Study:
- To investigate a path-reversed substrate-guided-wave holographic interconnection scheme.
- To demonstrate its application in wavelength-division demultiplexing.
- To analyze the performance and scalability of the proposed holographic demultiplexer.
Main Methods:
- Theoretical analysis of dispersion, bandwidth, and recording parameters for guided-wave holographic gratings.
- Fabrication of a holographic demultiplexer using a 20-microm photopolymer film.
- Experimental demonstration of four-channel demultiplexing and cascaded demultiplexer performance.
Main Results:
- A device with a 3-dB bandwidth of 20 nm was fabricated.
- Four-channel wavelength demultiplexing was achieved at 796, 798, 800, and 802 nm with no crosstalk.
- A cascaded demultiplexer achieved twenty fan-out channels (5 x 4) with +/-5% energy uniformity.
Conclusions:
- The path-reversed substrate-guided-wave holographic interconnection scheme is effective for WDM applications.
- The demonstrated device offers high channel isolation and significant fan-out capability.
- This technology has the potential to increase user-sharing capacity in optical networks.
