| EPSRC Reference: |
GR/L90781/01 |
| Title: |
SYSTEM STUDIES, DESIGN AND OPTIMIZATION OF NOVEL FIBRE GRATING LASERS FOR OPTICAL COMMUNICATION NETWORKS |
| Principal Investigator: |
Bayvel, Professor P |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Electronic and Electrical Engineering |
| Organisation: |
UCL |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 March 1998 |
Ends: |
31 August 2000 |
Value (£): |
182,465
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| EPSRC Research Topic Classifications: |
| Optical Communications |
Optical Devices & Subsystems |
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Summary on Grant Application Form |
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The proposed programme, in close collaboration with BT, GPT Ltd and Cambridge Optical Instruments, and support from Corning, is aimed at the investigation and optimization of fibre grating lasers (FGLs), in particular, as stable, low-cost, log-chirp, directly modulated sources for densely spaced WDM optical networks. The key to the success of these networks is the availability of low-cost single-frequency lasers with enhanced temperature stability, exactly specified wavelengths and reduced chirp under high speed (>1 Gbit/s) direct modulation to avoid transmission penalties due to crosstalk. Fibre-grating lasers offer the unique combination of direct modulation (at high speed) with reduced chirp and enhanced mode and temperature stability at low cost. Since the output wavelength of the device is precisely determined by the fibre Bragg wavelength, the semiconductor growth requirements on the precision of the output wavelength, so difficult to achieve in practice, are relaxed, further reducing cost. We propose to investigate novel GFL cavity designs, with improved anti-reflection coating and facet design and their optimisation to demonstrated enhanced stability for transmission of up to 8-16 directly modulated channels at 2.5-10 Gbit/s. We will also explore the application of dual wavelength FGSs for millimetre wave generation over fibre for access network applications.
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Key Findings |
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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