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Holographic mode-selective launch for bandwidth enhancement in multimode fiber
1Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK. a.amphawan@seh.oxon.org
Optics Express
|June 7, 2011
Summary
Researchers enhanced fiber optic bandwidth using a novel optical method. A spatial light modulator and lenses generated the input field, increasing bandwidth by 3.4 times for faster Local Area Networks.
Area of Science:
- Optical Engineering
- Telecommunications
Background:
- Local Area Networks (LANs) face increasing bandwidth demands, necessitating speeds beyond 40 Gbit/s.
- Existing holographic optimization techniques for MMF links are primarily algorithmic.
Purpose of the Study:
- To investigate a non-algorithmic, optics-based method for improving MMF link bandwidth.
- To demonstrate a significant bandwidth enhancement for next-generation LANs.
Main Methods:
- Utilized a set of lenses and a spatial light modulator (SLM) as a binary amplitude filter.
- Generated the input modal electric field into a graded-index MMF using a priori theoretical information.
- Focused on optical components rather than algorithmic approaches.
Main Results:
- Achieved a bandwidth increase of up to 3.4 times in MMF links.
- Successfully generated the incident modal electric field using the optical setup.
Conclusions:
- A physical optics approach using SLMs can effectively enhance MMF bandwidth.
- This method offers a promising alternative to algorithmic solutions for high-speed LANs.
