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Design, implementation, and characterization of a kinematically aligned, cascaded spot- array generator for a
D F Brosseau1, F Lacroix, M H Ayliffe
1Photonic Systems Group, Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montréal, Québec H3A 2A7, Canada.
Applied Optics
|March 14, 2008
Summary
A modular spot-array generator was designed for optical interconnects. This system uses diffractive optics to create precise spot arrays, ensuring stable alignment for efficient data transmission.
Area of Science:
- Optoelectronics
- Diffractive Optics
- Optical Interconnects
Background:
- Free-space optical interconnects are crucial for high-speed data communication.
- Efficient generation of optical spot arrays is a key challenge in these systems.
- Existing methods may require complex alignment procedures.
Purpose of the Study:
- To design and implement a modular spot-array generator for modulator-based free-space optical interconnects.
- To achieve precise and stable generation of optical spot arrays.
- To simplify alignment and ensure system reliability.
Main Methods:
- Utilized two cascaded diffractive optical elements (DOEs).
- Designed the DOEs to produce 4x8 clusters of optical spots.
- Implemented kinematic alignment for seamless integration with the interconnect system.
Main Results:
- Successfully generated 4x8 clusters with a pitch of 1600 microm x 800 microm.
- Each cluster comprised a 4x4 array of spots with a 13.1-microm radius (1/e^2) on a 90-microm pitch.
- Demonstrated kinematic alignment allowing for removal and reinsertion without realignment.
Conclusions:
- The developed modular spot-array generator is effective for optical interconnects.
- The use of cascaded DOEs provides precise control over spot array generation.
- Kinematic alignment ensures robust and user-friendly system integration.
