AEPONYX inc. stands behind a unique & patent-protected technology, which is capable of easing the adoption of dense wavelength division multiplexing passive optical networks. The name of this technology is AEPON™ , which stands for Active Ethernet Passive Optical Networks, and is a trademark of AEPONYX inc.
Active Ethernet when provisioned over optical fiber signifies the allocation of one or two strands of optical fiber for each circuit and is contrasted to be of better quality than Ethernet PON or Gigabit PON technologies (EPON, GPON) because with Active Ethernet, bandwidth is presumed not to be shared in time between multiple users. Active Ethernet networks can be provisioned in a manner that is called wirespeed, where the available capacity in the uplink is always presumed to exceed the capacity across all downlinks, even when used at full speed simultaneously. The provision of GPON and EPON networks, in a manner that is wirespeed, is difficult, because those technologies are based on a single wavelength shared in time by all users behind the same power splitter. With EPON and GPON equipment, on the receiving end, the same signal is received by all users at the same time and it is for the customer premise equipment to discriminate which packets are destined to it. In that sense, EPON and GPON are not secure communications unless they are encrypted. Yet, throughout all of this, the costs of operating a fiber optic network with distributed local convergence points that are fully passive and require no power, is considered to be far more effective than the traditional approach with Active Ethernet, which is to build the network with largely the same topology and cost inefficiencies as the copper telephone network.
The question which poses itself is whether it would be possible to build an Active Ethernet Network, with the attributes of wirespeed aggregation and dedicated capacity per end-user but with the efficiencies of passive optical network topologies, with even greater distance than that possible with EPON or GPON and with even greater split ratio, without any sharing of bandwidth in time between end-users. The answer to this question is yes, such is now possible, thanks to AEPON™ technology as supported by AEPONYX and which is based on well understood dense wavelength division multiplexing passive optical networks (DWDM-PON) theory and practice.
In a DWDM-PON network, the 1:32 power splitter of the EPON or GPON network is replaced by an AEPONYX 40 channels ColorNode™ acting as a WDM-PON remote node. The behavior of the AEPONYX ColorNode™ is not that of sending the same signal down 32 paths, but that of routing only two of the 80 wavelengths (a pair of C+L lambdas) down an output dedicated to a customer. The technology behind AEPONyX ColorNodes™ is called Athermal Arrayed Waveguide Gratings (AAWG) and is nearly the same which has been used in long-haul transmission networks, but modified for the needs of single fiber access networks. The natural Cyclic properties of ColorNode™ AAWG designed to transport 40 lambdas in the C band also inherently allows it the capability of transporting 40 lambdas in the L band, which makes it possible to achieve 40 full-duplex channels with 80 lambdas on a single fiber.
Figure 1 below illustrates the utilization of all possible 80 wavelengths of 40 AEPON™ channels.
AEPONYX promotes the upgrade of EPON and GPON to AEPON™ with 1:40 splitting ratios at local convergence points that are centralized, by simply removing the 1:32 power splitters and replacing them with AEPONYX 40 channels ColorNodes™ .
AEPON™ technology behaves like point-to-point topology on a multipoint layer of wavelengths (lambdas) through a remote node. Further, AEPONYX has included CWDM single fiber transceivers as part of its solution and promotes their use for applications such as network-to-network interfaces and datacenter cross-connects, across which AEPONYX is capable of transporting 32 circuits, at the monthly price of a single datacenter cross-connect. The power of AEPON™ technology is further decoupled with the tight integration of CWDM PON and DWDM PON, as enabled in the AEPONyX MxC-80™ platform. AEPON™ DWDM technology enables the provision of 40 circuits onto a single fiber over distances of up to 60 kilometers, allowing operators to expand their networks without need for overbuilding them. The lambda multiplexing layer that empowers AEPON™ DWDM technology gives rise to the name of AEPONYX. In AEPONyX, the y represents an inverse lambda and the X represents the multiplexing of lambdas on a single fiber. Hence, with its AEPON™ technology deployed over a layer of Lambda multipleXing, AEPONYX is entitled to convey meaning to its name.
While the motivation for implementing WDM-PON technology has remained high over the last decade, it has been the lack of simpler technological options for implementing WDM-PON which has been responsible for its very slow adoption. As a result of the recent patented inventions embodied in the AEPONYX Omnicolor™ AEPON™ DWDM transceivers AND Unicolor pluggable Bragg filter AEPONYX Colorplugs™, it is now possible to deploy WDM-PON affordably and with ease.
AEPONYX is first to market with a 40-channel WDM-PON solution capable of providing 40 circuits of 1 Gbps, at the same time, on a single fiber, and at distances of 60 km. Thanks to AEPON™ technology, the number of DWDM transceivers that need to be kept in inventory by operators is reduced down to only two SFP models, one with its transmission set in the L band used at the point of presence inside equipment such as the AEPONYX MxC-80™ and one with its transmission set in the C band for use inside customer premise equipment such as AEPONYX ColorNIDs™.
The AEPON™ System Architecture provides a complete end-to-end dedicated 1 gbps service to every end-user. It is based on the integration of several AEPONYX products around the MxC-80™platform, including the ColorNode™, the ColorNID™, the Omnicolor™ DWDM SFPs along with their Colorplugs™, the Unicolor™ CWDM SFPs along with the Muxpanels™ and their CWDM MuxCassettes™.
Figure 2 below depicts the overall AEPON™ System Architecture as enabled for the first of 40 AEPON™ channels from the Cloud Service Provider Router equipped with a Unicolor™ CWDM SFP to the Cloud Service Provider end-user equipped with a ColorNID™ outfitted with an Omnicolor™ DWDM SFP along with its Colorplug™:
AEPONyX does not deny that other tunable WDM-PON technologies exist, such as injection locking, tunable polymer grating and seedless injection locking. However, only AEPONyX fully supports all 80 lambdas of the DWDM C & L bands on a single fiber, with a reach of 60 km and with a very permissive dynamic range beyond the remote node. Further, no other solution is based on use of SFPs and on Carrier Ethernet technology as part of a transponder platform and thus permitting the flexible upgrade of any Metro Ethernet network to WDM-PON when the opportunity arises.
While AEPON™ technology is patent-protected, it is by no mean proprietary. It is fully standards-compliant with the ITU C&L DWDM bands, which means that AEPON™ can be troubleshooted like any DWDM transport technology with standard Optical Spectrum Analyzers. It can be amplified and it can be dispersion compensated to achieve even greater distances than 60 kilometers. The MxC-80™ plafform CrossMux8G™ module is based on MSA-compliant SFP slots which can accomodate not only AEPONyX SFPs but also non-colored SFPs and Copper SFPs. All AEPONyX products make use of world class MEF-compliant Vitesse® Carrrier Ethernet commercial chipsets and thus achieve a level of operational maturity at par with established solutions.
There is absolutely nothing proprietary in the way AEPON™ technology behaves. In fact, AEPON™ technology is simpler and more cost effective than any other WDM-PON technology in the world.