Sub-millisecond dynamic optical path setup in DWDM multi-mode switching networks

Chen, Wenhao; Wang, Lei; Chenchykov, Dmitriy; Wu, Linsen; Chen, Yuhua

doi:10.1109/glocom.2013.6831422

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…[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). 18) The switch based on a wavelengthtunable laser has a large advantage from the viewpoints of power consumption and the number of components.…”

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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