Development of Beyond 100G Optical Cross Connect (B100G-OXC) System

Kawasaki, Takeshi; Seki, Takeshi; Ito, Ken; Sugano, Yasutaka; Date, Hiroyuki; Kawahara, Hiroyuki; Shimazaki, Daisaku; Maeda, Hideki

doi:10.53829/ntr202111ra2

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The typical way to achieve a higher SNR is to reduce electrical noise and interference in the transceiver and optical ASE and fiber nonlinearities in the optical link. However, advanced DSP technologies, such as high-coding-gain FEC, PCS, and precise equalization as well as low-noise optical links consisting of low-loss and low-nonlinearity fibers with distributed Raman amplifiers [38], are already being actively deployed. Thus, further increasing the aggregate net rates in a single-core SMF To obtain a high-quality, high-symbol-rate signal, it is important to minimize the narrowing of the signal band due to the frequency response of optical/electrical devices in the transceiver.…”

Section: Proceedings Of the Ieeementioning

confidence: 99%

Coherent Optical Transceivers Scaling and Integration Challenges

et al. 2022

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The advancement of digital coherent technologies has dramatically increased the system capacity per singlecore single-mode fiber to the point that we can now approach the Shannon limit by utilizing high-order modulation formats and high-coding gain forward error correction (FEC) codes.Because the required energy per bit increases exponentially the closer we get to the Shannon limit, extending the available optical bandwidth by using ultrawideband wavelength-division multiplexing (WDM) and/or spatial-division multiplexing (SDM) is indispensable for increasing the system capacity with high energy efficiency. However, simple extensions of wavelength resources and spatial parallelization dramatically increase the number of transceivers (TxRxs) in proportion to the wavelength/spatial multiplicity. The key to achieving cost-and energy-efficient systems is to reduce the system complexity by using high-density integration and broadband optelectronics.In this article, we overview and discuss the recent advances of coherent optical transceivers integrated with an optical front end and digital signal processing (DSP)/application-specific integrated circuit (ASIC). We then present the transponder architectures and the challenges involved in applying them for massive parallelized transmission systems.

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Section: Proceedings Of the Ieeementioning

confidence: 99%

Coherent Optical Transceivers Scaling and Integration Challenges

et al. 2022

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“…Expanding traffic related to datacenter networks mainly drove such demand for reducing the size and increasing bandwidth. Therefore, NTT argued that silicon photonics technology can be used for digital coherent optical transceivers [2].…”

Section: Cosa For Digital Coherent Transmissionmentioning

confidence: 99%

Ultracompact Silicon Photonics Coherent Optical Subassembly for Ultrahigh-capacity Optical Communication

Nasu

Yamanaka

2020

NTT Technical Review

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Toward the All-Photonics Network, which is a key element of the Innovative Optical and Wireless Network (IOWN), we at NTT Device Innovation Center are developing an ultracompact optical transceiver module as a photonics-electronics convergence device. By using silicon photonics technology and co-packaging electronic devices, we fabricated an ultracompact coherent optical module for next highcapacity optical networks.

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Development of Beyond 100G Optical Cross Connect (B100G-OXC) System

Cited by 2 publications

References 4 publications

Coherent Optical Transceivers Scaling and Integration Challenges

Coherent Optical Transceivers Scaling and Integration Challenges

Ultracompact Silicon Photonics Coherent Optical Subassembly for Ultrahigh-capacity Optical Communication

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