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Increasing the length and diameter of the fiber ring of fiber optic gyroscope (FOG) can improve the accuracy of FOG, and the optical measuring range of FOG will be reduced accordingly. High-precision FOG usually uses cross-fringe modulation and demodulation algorithm to increase its measuring range, but it can only be started in its optical measuring range, otherwise it will output the wrong angular...
We proposed a nonbinary byte-interleaved coded-modulation scheme with inner and outer turbo-like iterative decoder. The net coding gain is 0.6dB higher than the state-of-the-art binary SPC-LDPC-based turbo-product counterpart, with adjustable iterations and lower error-floor.
A frequency-doubling optoelectronic oscillator (OEO) has been proposed. In the proposed device, several passive components are introduced into the traditional OEO to handle the polarization state of the laser in the feedback loop. Making use of the polarization dependence of the LiNbO3 intensity modulator, a special double sidebands modulation is implemented where the polarization direction of the...
The nonreciprocal optical effect of Faraday rotation (FR) is widely exploited in optical isolators to suppress back-reflections to protect optical sources and other devices from injection noise, or in optical circulators to route counter-propagating signals in a single physical channel to different ports [1]. The first concept of an integrated isolator was based on nonreciprocal TE-TM mode conversion...
We investigate the feasibility of an optical packet-switched ring network node operating at 160 Gb/s, by employing in-band labeling and SOA based wavelength conversion. We find error-free operation with low power penalty over the complete system.
We demonstrate a 1??16 optical packet switch sub-system for 160 Gbps RZ-OOK and 12 ?? 10 Gbps multi-wavelength DPSK packets. We show error-free operation with maximum penalties of 0.7 dB for 160 Gbps RZ-OOK and 0.6 dB for multi-wavelength DPSK packets.
A monolithic integrated three-section amplified feedback semiconductor laser (AFL) is demonstrated as an all optical clock regenerator. All optical clock recovery for 40Gb/s is demonstrated experimentally using AFL.
In this paper, an evanescently coupled uni-traveling carrier photodiodes (EC-UTC-PDs) have been fabricated and investigated, which can benefit from the incorporation of a multimode diluted waveguide of appropriate length with experiment-simulation comparison. A high responsivity of 0.68 A/W at 1.55-mum without an anti-reflection coating, -1 dB compression current of more than 19 mA, and a large -1...
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