Enables 10G metro and long-haul network transition to 40G/100G
Vitesse Semiconductor, a provider of IC products for carrier and enterprise networks, has released VSC8247, a single-chip device with four simplex channels of Electronic Dispersion Compensation (EDC) and integrated Clock and Data Recovery (CDR) functions.
The company said that the new product supports speeds of 8.5Gbps to 11.3Gbps, and possible low-cost, multi-lane implementations of metro and long-haul 40G links while supporting optional feedback from a forward error correction (FEC) device. The device targeted at high-density optical modules and line cards, facilitates service providers in transition from current 10G long-haul networks to 40G and 100G.
The new product is compatible with networks based on ethernet, SONET/SDH, and Fibre Channel and is suitable for high-density, single-mode fibre photonic integrated circuit (PIC) applications. It is supported by FlexEQ EDC and adaptive equalisation technology and facilitates extending optical links up to 120km without dispersion compensation or increase link margin in excess of 3dB, while allowing the use of lower cost optics.
According to Vitesse, the VSC8247 features VScope embedded waveform viewing technology allowing remote diagnostics to observe and test 10G/40G/100G links while running traffic. In addition, it meets the 40 Gigabit Ethernet (GbE) and 100 GbE IEEE P802.3ba/D3.0 draft standard in areas such as optical stressed receiver sensitivity test.
The RX path output driver, with up to 10dB of pre-emphasis, is capable of overcoming any signal integrity degradation resulting from the CFP connector and up to 10 inches of host FR4 trace compliant to standards including 100GBASE-CR12, 100GBASE-SR12, 40GBASE-CR4, 40GBASE-SR4, and 40GBASE-LR4. It also includes integrated error checkers on each of the four independent channels, the company said.
The VSC8247 also supports static EDC operations in non-dynamic environments. In addition to its self-adaptation mode, it accepts feedback from a FEC circuit for optimum performance. In concert with FEC, error free links can be achieved for OSNR below 11dB with negligible back-to-back penalty.
Gary Paules, product marketing manager at Vitesse, said: “The VSC8247 offers superb performance in metro and long-haul applications, as evidenced by its growing use in multiple high density 40G/100G platforms.”