PASSIVE WDM COMPONENTS: COUPLERS

Transcription

1 PASSIVE WDM COMPONENTS: COUPLERS EREN CANDAŞ BERK EROL Supervisors: Halil Tanyer EYYUBOĞLU Mehmet Eray METİN (Türk Telekom)

2 Presentation Outline Introduction Project Plan Group Study WDM Passive Components Types of Couplers Conclusion Short Information about Türk Telekom Future Work ECE 491 Interm Presentation 09/12/2012 2

3 Introduction Project aim: Theoretical design and calculations for various WDM components such as couplers. Information about the project: This project focuses on the passive WDM components. It also covers the understanding of WDM concept and significance of the couplers. ECE 491 Interm Presentation 09/12/2012 3

4 Project Plan Design and calculations for 8X8 Mach-Zehnder Interferometer with OptiBPM Simulation Program. ECE 491 Interm Presentation 09/12/2012 4

5 Group Study Researced from different sources (presentations, articles, books) Every Wednesday we went to Türk Telekom Akademi Saw some passive devices at Türk Telekom Akademi If a training is organized about the Fiber Optics, we will attend that training at TT Akademi We got the OptiBPM software and run some example simulations. (e.g. Basic 2X2 Mach Zehnder Interferometer) ECE 491 Interm Presentation 09/12/2012 5

6 OptiBPM Simulation Outputs ECE 491 Interm Presentation 09/12/2012 6

7 Wavelength Division Multiplexing A powerful aspect of an optical communication link is that many different wavelengths can be sent along fiber simultaneously. The technology of combining a number of wavelengths onto the same fiber is known as wavelength division multiplexing or WDM. The key system features of WDM are as follows: Capacity upgrade Transparency Wavelength routing and switching ECE 491 Interm Presentation 09/12/2012 7

8 Operational Principle of WDM A t t e n u a t i o n Wavelength ECE 491 Interm Presentation 09/12/2012 8

9 WDM System Typical WDM Link ECE 491 Interm Presentation 09/12/2012 9

10 Advantages of WDM Works with existing single mode communication fiber Ultra high capacity Transparent data transfer Long transmission distance High performance and low cost Seamless expansion Networking is a high flexibility, economical and reliable ECE 491 Interm Presentation 09/12/

11 Passive Components Passive devices operate completely in the optical domain to split or combine light streams (no optical to electrical conversion). ECE 491 Interm Presentation 09/12/

12 Types of Couplers T and Y (3-port) Coupler 1-N or Tree Coupler Star Coupler Separate inputs and outputs All ports equivalent ECE 491 Interm Presentation 09/12/

13 Basic Star Coupler May have N inputs and N outputs Can be wavelength selective/nonselective Up to N= 64, typically N< 10 ECE 491 Interm Presentation 09/12/

14 2X2 Fiber Coupler ECE 491 Interm Presentation 09/12/

15 2X2 Fiber Coupler P P cos 2 ( ) 1 0 z P P sin 2 ( ) 2 0 z Normalized coupled powers P / P P/ P 1 0 and as a function of the coupler draw length for a 1300nm power level P launched into fiber Dependence on wavelength of coupled powersin the completed 15- nm - long coupler the z : coupler drawing length κ : coupling coefficient describing the interaction between the fields in the two fibers ECE 491 Interm Presentation 09/12/

16 Conclusion Basic WDM principles have been understood Different some types of couplers have been investigated ECE 491 Interm Presentation 09/12/

17 About Türk Telekom Akademi Türk Telekom Akademi was established in 2008 to provide the employees, the sales channels, and the business partners of Türk Telekom Group Companies with training and development programs. Operation and coordination of all training activities inside and outside the company are managed by Türk Telekom Akademi. Starting with a vision of being a global competitor in its field, Türk Telekom Akademi operates in five main areas. These are Telecommunication Development Center, Corporate Development Center, Learning Technologies Center, Training Management and Audit Center, and "Training Projects Office«Türk Telekom Akademi aims to continue to develop numerous training and development programs and products At Türk Telekom Akademi, all the training content, which has been structured according the needs, is continuously updated and offered for multiple usages. ECE 491 Interm Presentation 09/12/

18 Future Work We are planning to learn OptiBPM simulation program We aim to design a 8X8 MZI with OptiBPM Become familiar with other types of couplers ECE 491 Interm Presentation 09/12/

19 THANK YOU! ECE 491 Interm Presentation 09/12/