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Intermodal interference in a photonic crystal fibre
Optics Express
|June 2, 2009
Summary
Intermodal interference was measured in photonic crystal fibres, posing a challenge for device use. Standardized measurement techniques are needed for these novel fibres, similar to existing standards for conventional fibre.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Photonic crystal fibres (PCFs) offer unique light-guiding properties.
- Single-mode operation over long lengths is crucial for PCF applications.
- Intermodal interference can degrade signal quality in optical fibres.
Purpose of the Study:
- To measure intermodal interference in single-mode photonic crystal fibres.
- To assess the impact of this interference on practical device utilization.
- To highlight the need for standardized measurement techniques for PCFs.
Main Methods:
- Measurement of intermodal interference over a short fibre length.
- Analysis of interference patterns analogous to conventional fibre measurements.
Main Results:
- Intermodal interference was detected in single-mode PCFs.
- The measured interference is comparable to that found in conventional fibres.
- This interference presents a potential limitation for PCF device applications.
Conclusions:
- Intermodal interference is a significant consideration for photonic crystal fibre technology.
- Standardized measurement protocols, akin to ITU standards, are essential for PCF characterization.
- Developing these standards will facilitate the commercial adoption and reliable use of PCF devices.
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