Lambda

APPLICATIONS

GPON/GEPON network architecture

MILITARY/GOVERNMENT AGENCIES

1. Up-to-date networks
2. Reduces CAPEX budgets
3. Lower energy consumption
4. Space optimization

Fiber is inherently harder to tap into than a copper-based circuit. A fraudulent ONT cannot be spliced onto a fiber optic network, because the GPON system identifies each ONT based on pre-defined serial numbers and operator settings. Critics of fiber highlight the fact that all users receive the same downstream broadcast, creating the potential for eavesdropping. However, to counter this threat, PON employs a 128-bit advanced encryption scheme. The scheme incorporates a two-way key exchange, making it virtually impossible to intercept another user’s data. As well, any device used to tap into the fiber must be able to decipher GPON GEM ports and traffic containers, which is not a typical function in standard Ethernet devices. All of these inherent capabilities make GPON a very secure environment for transporting sensitive data.

HIGH-RISE BUILDING

1.Fiber-to-the-desktop
2.High bandwidth offices
3.Added-value lease

In most deployments, Ethernet is limited to 1000Mbps shared among many users. In one of the best case scenarios, 24 users are connected for an average of 41.7 Mbps per user. More commonly, the switches are stacked in daisy-chains, significantly reducing true bandwidth per user for applications such as e-mail, access to graphics/video or databases. In GPON, the full downstream line rate of 2.5 Mbps across 32 users delivers an average of 78 Mbps per user—a 90 percent increase in available sustained bandwidth. When needed, an ONT can deliver up to the 1000 Mbps

MULTIBUILDING CAMPUSES

1.Long distances between buildings
2.Limited OPEX for maintenance

In a campus environment, the typical approach is to locate the OLT shelf in the main building and then run fiber to the individual satellite buildings. In this case, the fibers reach optical splitters placed inside the buildings. The fibers in turn fan out at the optical splitters, reaching individual ONTs or users. To connect voice, data and video traffic back to the network core, the OLT offers multiple 1Gbps or multiple 10Gbps uplinks, providing bandwidth that can scale as your traffic demands rise. For a campus scenario, GPON is especially effective because it eliminates the need for active power consuming equipment in the closets or basements of many of the buildings.

LEED-CERTIFIED BUILDING

1.Minimize environmental impact
2.Lower energy consumption
3.Increase building value

Converging all of these services onto a single GPON distribution platform provides the bandwidth needed while significantly reducing the equipment, cabling and power required.

Already deployed by many telecommunications carriers, GPON has quickly established itself as the worldwide standard for delivering voice, data and video. Among other benefits, GPON provides an enormous amount of bandwidth—2.5Gbps downstream and 1.25Gbps upstream—over a single strand of glass.