Zigzag waveguide demultiplexer for multimode WDMLAN

Lemoff, B. E.; Aronson, Lewis B.; Buckman, L.A.

doi:10.1049/el:19980721

Cited by 13 publications

(2 citation statements)

References 3 publications

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“…Owing to the explosive demand for high-bandwidth applications and the accompanying short distance, multimode dense wavelength division multiplexing ͑DWDM͒ has become an essential, robust, and highperformance data-and air-link technology in metropolitan area networks ͑MANs͒ and local area networks ͑LANs͒. [1][2][3][4][5][6][7] Multimode fiber represents the sizable portion of the fibers used in LANs, owing to its low-cost installation and maintenance. It was installed in LANs as early as the 1980's.…”

Section: Introductionmentioning

confidence: 99%

Athermalized low-loss echelle-grating-based multimode dense wavelength division demultiplexer

Qiao¹,

Zhao²,

Chen³

et al. 2002

Appl. Opt.

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A high-density wavelength division demultiplexer (DEMUX) capable of demultiplexing eight-channel 200-GHz optically spaced signals into a 62.5-microm multimode-fiber array is reported. The wavelength range of operation is from 1549.32 to 1560.61 nm within the International Telecommunication Union grid. The measured wavelength accuracy is within 0.04 nm. The mean insertion loss of this DEMUX is 1.95 dB. Thermal analysis and temperature testing results are reported. The temperature test cycling from 20 degrees C to 60 degrees C indicates that the wavelength thermal drift is less than 0.8 pm/degrees C. Adjacent cross talk is measured to be better than -45 dB. The measured data transmission bit rate of this device is higher than 3.5 Gb/s.

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Section: Introductionmentioning

confidence: 99%

Athermalized low-loss echelle-grating-based multimode dense wavelength division demultiplexer

Qiao¹,

Zhao²,

Chen³

et al. 2002

Appl. Opt.

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“…The bandwidth that can be achieved by this technology depends practically only from the sustainable technological and economical expense but not from physical laws. The WDM technology has been proven to be able to be used in multimode technology and is used in optical LAN interconnects today [16,17,18].…”

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confidence: 99%

WDM package enabling high-bandwidth optical intrasystem interconnects for high-performance computer systems

et al. 2006

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From long haul, metro access and intersystem links the trend goes to applying optical interconnection technology at increasingly shorter distances. Intrasystem interconnects such as data busses between microprocessors and memory blocks are still based on copper interconnects today. This causes a bottleneck in computer systems since the achievable bandwidth of electrical interconnects is limited through the underlying physical properties. Approaches to solve this problem by embedding optical multimode polymer waveguides into the board (electro-optical circuit board technology, EOCB) have been reported earlier. The principle feasibility of optical interconnection technology in chipto-chip applications has been validated in a number of projects. For reasons of cost considerations waveguides with large cross sections are used in order to relax alignment requirements and to allow automatic placement and assembly without any active alignment of components necessary. On the other hand the bandwidth of these highly multimodal waveguides is restricted due to mode dispersion [1]. The advance of WDM technology towards intrasystem applications will provide sufficiently high bandwidth which is required for future high-performance computer systems: Assuming that, for example, 8 wavelength-channels with 12Gbps (SDR 1 ) each are given, then optical on-board interconnects with data rates a magnitude higher than the data rates of electrical interconnects for distances typically found at today's computer boards and backplanes can be realized. The data rate will be twice as much, if DDR 2 technology is considered towards the optical signals as well [2,3]. In this paper we discuss an approach for a hybrid integrated optoelectronic WDM package which might enable the application of WDM technology to EOCB.

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