Implementing Bidirectional Long Reach WDM-PON using Mode Locked Laser and RSOA

International Journal of Computer Applications
© 2014 by IJCA Journal
Volume 105 - Number 13
Year of Publication: 2014
Navnath Pethkar
Amol Patange

Navnath Pethkar and Amol Patange. Article: Implementing Bidirectional Long Reach WDM-PON using Mode Locked Laser and RSOA. International Journal of Computer Applications 105(13):21-24, November 2014. Full text available. BibTeX

	author = {Navnath Pethkar and Amol Patange},
	title = {Article: Implementing Bidirectional Long Reach WDM-PON using Mode Locked Laser and RSOA},
	journal = {International Journal of Computer Applications},
	year = {2014},
	volume = {105},
	number = {13},
	pages = {21-24},
	month = {November},
	note = {Full text available}


This paper presents Long Reach Wavelength Division Multiplexing Passive Optical Network (WDM-PON) system capable of delivering downstream 20 Gbit/s data and upstream 10 Gbit/s data on a single wavelength. The optical source for downstream data and upstream data is Mode Locked Laser at central office and reflective semiconductor optical amplifier (RSOA) at each optical network unit. We use two RSOAs at each optical network unit for the 10-Gb/s upstream transmission. The operating wavelengths of these RSOAs are separated by the free-spectral range of the cyclic arrayed waveguide gratings used at the central office and remote node (RN) for (de)multiplexing the WDM channels. We extend the maximum reach of this WDM PON to be 45 km by using Erbium-doped fiber amplifiers at the RN. The hybrid amplifier is designed to enhance the signal power and compensated the fiber dispersion over a wide wavelength range. Optical Equalization technique is used before the receiver to improve modulation bandwidth of an RSOA based colorless ONU. Optical Equalization technique helps to improve downlink and uplink performance. Bit error rate measured to demonstrate the proposed scheme. In this paper Long reach and large data service aspects of a WDM-PON is presented.


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