Fiber Optic Wiki

Cyan packet optical transport systems

July 22, 2011

Thanks to $30 million in Broadband Technology Opportunities Program (BTOP) funding, Com Net plans to add nearly 700 miles of fiber to GigEPAC’s existing optical network to expand broadband services to rural and underserved communities in 28 western Ohio counties.

Optical burst switching Method

July 21, 2011

In OBS, packets are aggregated into data bursts at the edge of the network to form the data payload.

Advantages of OBS over OCS

July 21, 2011

More efficient bandwidth utilization - In a OCS system, a lightpath must be set up from source to destination in the optical network. If the data transmission duration is short relative to the set up time, bandwidth may not be efficiently utilized in the OCS system.

Advantages of OBS over OPS

July 21, 2011

Remove throughput limitation - Optical buffer technology has not matured enough to enable low cost manufacturing and widespread use in optical networks. Core optical network nodes are likely to either be unbuffered or have limited buffers. In such networks, delayed reservation schemes such as Just Enough Time (JET) are combined with electronic buffering at edge routers to reserve bandwidth. Using JET can create a throughput limitation in an edge router in an OPS system. This limitation can be overcome by using OBS.

An optical power meter (OPM)

July 21, 2011

An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually called radiometers, photometers, laser power meters, light meters or lux meters.