Fujitsu expands 100-Gbps optical component and module lines

Fujitsu Optical Components Ltd. (FOC) will display a range of optical components and modules for 100-Gbps coherent transmission and 100 Gigabit Ethernet (100GbE) applications this week at OFC/NFOEC, including several new products.

For example, FOC will introduce a 100GbE CFP2 transceiver intended for LR4 applications. The CFP2 optical transceiver uses a 4x28G-Gbps lane electrical interface compliant with the CEI-28G-VSR specification. The new interface enables compact size (about half width of the current CFP) and low power consumption (about one-third of the current CFP), FOC says.

A CFP2 module for ER4 applications is under development, the company adds.

On the coherent side of the equation, FOC will display its 100G coherent transceiver based on the OIF 100GLH-EM specification. The 100G module takes advantage of FOC’s in house 100G DP-QPSK lithium niobate modulator and 100G DP-QPSK integrated coherent receiver.

The Mach-Zehnder modulator is designed to meet the OIF specifications for 128-Gbps (32 Gbaud) DP-QPSK applications. It integrates the DP-QPSK optical modulation circuit, polarization beam combiner, and monitor photodiode within a compact package. FOC says the design supports both wide bandwidth and low drive voltage operation.

The coherent receiver is compliant with the OIF specifications for 100-Gbps digital coherent receiving systems. The integration of 90-degree hybrids, balanced receivers, and polarizing beam splitters using planar lightwave circuit (PLC) and micro-assembly technologies enables a compact, low-cost, and high-performance 100G integrated receiver, FOC asserts.

Also in the FOC booth (#1310), Fujitsu Laboratories Ltd. will demonstrate its work applying Discrete Multi-Tone (DMT) modulation to optical systems. The approach has implications for 400GbE research (see “Fujitsu applies Discrete Multi-Tone for 100G optical transmission with 10G components”).

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