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In this letter, we demonstrate error-free operation of a 12-fiber /spl times/4-wavelength /spl times/5.21-Gb/s parallel-wavelength-division-multiplexed (PWDM) optical link. The 250-Gb/s transmitter and receiver assemblies each have a 5/spl times/8-mm footprint and consume a combined power of 1.5 W. To our knowledge, this is the first publication of a fully functional PWDM optical interconnect as well as the highest demonstrated bandwidth per unit area and bandwidth per unit power consumption for any multiple-channel fiber-optic interconnect. This technology is intended for short-distance high-bandwidth-density applications such as multiprocessor computer backplanes.

In this letter, we demonstrate for the first time all key components for a small-form-factor (SFF) wide-wavelength-division-multiplexed (WWDM) transceiver module with four channels operating at a data rate of 3.125 GBd/channel giving an aggregate rate of 12.5 GBd. The key components that enable a SFF package include a compact injection-molded plastic demultiplexer and a compact transmitter optical subassembly. We report link results showing successful operation of these key components with transmission over 300 m of 62.5-/spl mu/m core multimode fiber (MMF) and 10.5 km of single-mode fiber (SMF). These technologies enable highly-integrated WWDM 10-Gb Ethernet transceiver modules that support both MMF and SMF.

The direct integration of dense 48-channel parallel multiwavelength optical transmitter and receiver subassemblies directly onto a first level package using a flex lead attach has been demonstrated. Such an approach, at 10 Gb/s/channel would provide a linear edge bandwidth density of 300 Gb/s/cm. By attaching dense multichannel optical subassemblies directly onto an MCM, the performance limitations of the connectors and node card wiring can be avoided and the total bandwidth off the MCM can be increased while also enabling longer distance and higher speed signaling. This approach involves only a modest modification to the bent-flex approach commonly used for parallel optical modules intended for board mounting but enables a significant density and performance improvement for this application.

This article presents a promising approach for multi-Tb/s optical interconnects. This approach is contained in the MAUI project, which develops a parallel multiwavelength optical subassembly (PMOSA) that uses PWDM to gain the component-density advantages of two-dimensional parallel optics and the connector and cabling density advantages of CWDM. In the MAUI approach, a standard multimode 12-fiber ribbon is used with 4 wavelengths transmitted through each fiber, for a total of 48 optical channels.

This paper describes a 500-Gbps parallel wavelength-division multiplexed (PWDM) optical interconnect where 48 channels of 10.42-Gbps data are transmitted over a parallel 12-fiber ribbon with 4 wavelengths per fiber. The transmitter and receiver are each chip-scale packages with a footprint of 5 mm times 8 mm and a combined power consumption of 3 W. This work is motivated by the continually increasing bandwidth needs of short-distance computer processor interconnects, which are demanding optical solutions that maximize bandwidth per unit area, power consumption, and cost

We discuss a 12-fiber /spl times/ 4-wavelength /spl times/ 10.4-Gbit/s short-distance parallel-wavelength-division-multiplexed optical interconnect. The 0.5-Tbit/s transmitter and receiver assemblies each have a 5 /spl times/ 8-mm footprint and together consume 2.95 W.

This work presents the first fully-functional 48-channel parallel-wavelength-division-multiplexed (PWDM) transmitter, receiver and link results at a per-channel data rate of 5.21-Gb/s. This high-density PWDM optical interconnect gives an aggregate link bandwidth of a quarter terabit per second.

As the bandwidth requirements of local area networks (LANs) continue to increase, ever-faster fiber-optic links will be required in the backbones which aggregate the traffic of many users. A need has emerged for low-cost 10-Gb/s fiber-optic links in LAN backbones, prompting the IEEE to begin work on a standard for "10-Gigabit Ethernet". To take advantage of the large installed base of multimode optical fiber, as well as low-cost electronics and electrical interconnect technologies, a wavelength-division-multiplexed (WDM) fiber-optic module has been proposed in which four data channels, each transmitting at a data rate of 2.5 Gb/s on a different wavelength, are carried over a single fiber. In this paper, a fully integrated transceiver is described in which four lasers, four detectors, a wavelength multiplexer, a wavelength demultiplexer, and all necessary electronics are contained within a duplex-connectorized module. The component technologies that enable the transceiver to be compact and low-cost are also described.

Summary form only given.The ever-increasing need for computer bandwidth is creating bottlenecks in the backbones of local area networks (LANs). To address this the IEEE 802.3 Ethernet working group is developing a standard for 10-Gigabit Ethernet (10-GbE). This standard aims to support LAN links up to 300-m in length using 62.5-/spl mu/m core multimode fiber and up to 10-km in length using single-requirement mode fiber. One optical solution, likely to be included in the standard, is wide wavelength division multiplexing (WWDM). Using a single-mode-coupled transmitter and a multi-mode-coupled receiver allows a single module to simultaneously support both fiber types.

Summary form only given. Due to the increasing demand for high-bandwidth applications, multi-processor systems and communication systems are demanding very low cost, high-bandwidth optical interconnects. We present results on a 12-channel parallel optical link module (PONI Project) with each channel operating at a bit rate up to 2.5 GBd providing an aggregate bit rate up to 30 GBd. Each parallel optical link module is either a 12-channel transmitter module or a 12-channel receiver module with dimensions of 35 mm/spl times/16 mm/spl times/10 mm.

Low-cost WDM transceivers are needed for LAN. InGaAs PIN photodiodes detect the light. A multichannel integrated receiver IC amplifies and quantizes the received signal. The transmitter optical subassembly consists of 4 DFB lasers and a silicon V-groove chip robotically aligned to a planar waveguide combiner.