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Multi-PON access network using a coarse AWG for smooth migration from TDM to WDM PON
Optics Express
|June 24, 2009
Summary
This study introduces an interoperable access network using coarse array waveguide gratings (AWGs) for dynamic wavelength assignment. The architecture efficiently manages network load across multiple passive optical networks (PONs), enabling scalability and TDM/WDM migration.
Area of Science:
- Optical Networking
- Telecommunications Engineering
Background:
- Passive Optical Networks (PONs) are crucial for broadband access.
- Scalability and migration between Time Division Multiplexing (TDM) and Wavelength Division Multiplexing (WDM) PONs present challenges.
- Dynamic wavelength assignment is needed for efficient network load management.
Purpose of the Study:
- To describe an interoperable access network architecture using coarse array waveguide gratings (AWGs).
- To demonstrate dynamic wavelength assignment for managing network load across multiple PONs.
- To facilitate scalability and a smooth migration path between TDM and WDM PONs.
Main Methods:
- Utilized a multi-PON architecture employing coarse Gaussian channels of an AWG.
- Conducted network simulations on a cross-operational protocol platform.
- Performed optical transmission tests at 2.5 Gbit/s over 20 km.
Main Results:
- Confirmed successful routing of individual PON clusters through 7 nm-wide passband windows of the AWG.
- Demonstrated that polarization-dependent wavelength shift and phase errors do not impede routing performance.
- Achieved optical transmission at 2.5 Gbit/s for distances up to 20 km.
Conclusions:
- The proposed AWG-based architecture provides an interoperable solution for multi-PON networks.
- Dynamic wavelength assignment effectively manages network load and supports scalability.
- The architecture offers a viable path for migrating between TDM and WDM PON technologies.
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