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Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
Multiplexing
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Multiplexing

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  • 1. Faisal Nadeem Department of Physics and Mathematics University of Eastern Finland Nov 27,2012Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 2. • Motivation • Introduction • Operation • Results • Simulation • Fabrication of the • Devices • Conclusion • QuestionsFaisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 3. Extraction coupling efficiency 99.4% individual Loss <.5dB Wavelength wavelength link with channels 100 GHz channel spacing at 1550 nm Adjacent channel Return loss Isolation >23db >20dBFaisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 4. • High performance wavelength Multiplexing /De-Multiplexing device. • Based on Mach zehnder interferometer with photo induced Bragg gratings in the interferometer arm. • Can be used to extract/or add wavelength channel from the transmission line.Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 5. • De-Multiplexer • MultiplexerFaisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 6. 0 Input(dB m) -25 UV Trimming -50 λ1λ2λ3λ4λ5λ6λ7 3dB fused 3dB fused coupler coupler input 1 3 Tab 2 4 output 0 0 (mdB))output Tap(dB m) Identical Bragg Gratings -25 resonant at λ4 -25 -50 λ4 -50 λ1λ2λ3λ4λ5λ6λ7Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 7. 0 Due to Input(dB m) Symmetry Cross -25 Talk occurs UV Trimming -50 λ1λ2λ3λ4λ5 λ7 3dB fused 3dB fused coupler coupler input 1 3 Add Tab 2 4 output 0 0 Input(dB m) (mdB))output Identical Bragg Gratings -25 resonant at λ4 -25 -50 λ4 -50 λ1λ2λ3λ4λ5λ6λ7Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 8. Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 9. UV Trimming 3dB fused 3dB fused coupler coupler input 1 3 Tab 2 4 output Identical Bragg Gratings resonant at λ4Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 10. Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 11. Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 12. Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 13. C.Y. Wei et al (2002)AFM observation of surface topography of fiber Bragg gratings fabricated in germanium–boron codoped fibers and hydrogen- loaded fibers, Optical Materials , Vol:20, P 283- 294Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 14. Jharna Mandal et al. (2005) Fiber laser-based temperature sensor systems using R.T. Schermer et al., Opt. Exp., 19, 6, 5371 (Mar. 14, 2011).uniform wavelength-matched Bragg grating reflectors, Sensors and Actuators A:Physical,Vol.120, Pages 451-461 Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 15. • Multiplexing/Demultiplexing device for 100 GHz dense wavelength at 1550 nm. • Mux/de Mux showed high preformance • Can be improved further by writing more than one grating pair.Faisal Nadeem An All Fiber Dense wavelength Division Multiplexer/De-Multiplexer using photoimprinted Bragg Gratings
  • 16. oh oh- i am Control Freak "Recommend that you change YOUR course 15 degrees to the South to avoid a collision."

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