A CMOS Low-Power 10:4 MUX and 4:10 DEMUX Gearbox IC for 100-Gigabit Ethernet Link

Fukuda, K.; Ono, Go; Watanabe, K.; Muto, Takashi; Yamashita, Hiroyuki; Masuda, Naoyuki; Nemoto, Ryo; Suzuki, Eiichi; Tokuda, Takashi; Yuki, Fumio; Yagyu, Masayoshi; Toyoda, Hidehiro; Kono, Mitsuhiko; Kambe, A.; Umai, Seiichi; Saito, Tatsuya; Nishimura, Satoshi

doi:10.1109/csics.2011.6062438

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…In a conventional system, there are some problems such as large power consumption, high latency, and large equipment size of the electrical multiplexer=demultiplexer. [9][10][11] By contrast, the optical burst=packet switching system can switch without the electrical multiplexer=demultiplexer so that these systems can solve the above problems. [12][13][14] These optical switching systems need high-speed optical switches, such as semiconductor optical-amplifier-based gate switches, 15) lithium-niobate Mach-Zehnder-interferometer (MZI)-based directional coupler switches, 16,17) and wavelength-tunable lasers in combination with the arrayed waveguide grating (AWG).…”

Section: Introductionmentioning

confidence: 99%

Sub-microsecond wavelength stabilization of tunable lasers with the internal wavelength locker

Kimura

Tatsumoto

Sakuma

et al. 2016

Jpn. J. Appl. Phys.

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We proposed a method of accelerating the wavelength stabilization after wavelength switching of the tunable distributed amplification-distributed feedback (TDA-DFB) laser using the internal wavelength locker to reduce the size and the cost of the wavelength control system. The configuration of the wavelength stabilization system based on this locker was as follows. At the wavelength locker, the light intensity after an optical filter is detected as a current by the photodiodes (PDs). Then, for estimating the wavelength, the current is processed by the current/voltage-converting circuit (IVC), logarithm amplifier (Log Amp) and field programmable gate array (FPGA). Finally, the laser current is tuned to the desired wavelength with reference to the estimated wavelength. With this control system the wavelength is stabilized within 800 ns after wavelength switching, which is even faster than that with the conventional control system.

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Section: Introductionmentioning

confidence: 99%

Sub-microsecond wavelength stabilization of tunable lasers with the internal wavelength locker

Kimura

Tatsumoto

Sakuma

et al. 2016

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Since this conversion requires large-scale and high-speed electrical circuits such as a serializer=deserializer, clock data recovery are causing problems, namely, large power consumption and time delay. [1][2][3] To solve these problems, an optical burst switching system [4][5][6][7][8] and an optical packet switching system, [9][10][11][12][13] which do not require OEO conversion, have been studied to realize high-speed, compact, and lowpower optical communication.…”

Section: Introductionmentioning

confidence: 99%

High-speed and long-term wavelength stabilization of tunable distributed amplification distributed feedback laser after laser activation with feedforward and feedback control

Fukuda

Yamaguchi

Kuboki

et al. 2018

Jpn. J. Appl. Phys.

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To manage recent exponentially increasing data traffic, optical-to-optical burst switching and packet switching systems have been attracting much attention because they do not require an optical-to-electrical and an electrical-to-optical conversions. These systems require high-speed optical switches with a large number of input/output ports. As a candidate for the optical switch, we have focused on the combination of wavelength tunable lasers and an arrayed waveguide grating router, and studied the tunable distributed amplification distributed feedback (TDA-DFB) lasers for the optical switch. Previously, our derived feedforward current control achieved high-speed wavelength switching at a single laser in six-arrayed TDA-DFB lasers. For larger-scale optical switching, wavelength switching from a laser to another in an array is required to cover a wide tunable range. In this study, we develop a novel current control model and successfully stabilize the wavelength immediately after laser activation, which would enable high-speed switching between different lasers. Furthermore, we demonstrate the combination of feedforward and feedback controls for high-speed switching with long-term stability.

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A CMOS Low-Power 10:4 MUX and 4:10 DEMUX Gearbox IC for 100-Gigabit Ethernet Link

Cited by 2 publications

References 2 publications

Sub-microsecond wavelength stabilization of tunable lasers with the internal wavelength locker

Sub-microsecond wavelength stabilization of tunable lasers with the internal wavelength locker

High-speed and long-term wavelength stabilization of tunable distributed amplification distributed feedback laser after laser activation with feedforward and feedback control

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