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Multiport optical circulator by using polarizing beam splitter cubes as spatial walk-off polarizers
Jing-Heng Chen1, Kun-Huang Chen, Jiun-You Lin
1Department of Photonics, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung 40724, Taiwan. jhchen@fcu.edu.tw
Applied Optics
|March 12, 2010
Summary
This study introduces a novel design for optical circulators using polarizing beam splitter cubes. This method enhances performance and reduces cost in optical communication systems.
Area of Science:
- Photonics and Optical Engineering
- Telecommunications Devices
Background:
- Optical circulators are essential passive components in optical communication networks.
- The spatial walk-off polarizer is a critical element influencing optical circulator performance and cost.
Purpose of the Study:
- To propose and demonstrate a new design for multiport optical circulators.
- To utilize polarizing beam splitter cubes as spatial walk-off polarizers for improved device design.
Main Methods:
- A novel optical circulator design employing polarizing beam splitter cubes was conceptualized.
- A prototype six-port optical circulator was fabricated based on the proposed design.
Main Results:
- The fabricated six-port optical circulator prototype exhibited insertion losses ranging from 0.94 to 1.49 dB.
- The device achieved isolations between 25 and 51 dB, with return losses of 27.72 dB.
Conclusions:
- The proposed design using polarizing beam splitter cubes is feasible for creating multiport optical circulators.
- This approach offers a viable method for enhancing optical circulator performance and potentially reducing manufacturing costs.
