A modal interferometer is experimentally demonstrated based on tapering a single-mode-multimode-single- mode （SMS） fiber structure heated by hydrogen flame. The interference fringe begins to form when tapering lengt...
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A modal interferometer is experimentally demonstrated based on tapering a single-mode-multimode-single- mode （SMS） fiber structure heated by hydrogen flame. The interference fringe begins to form when tapering length is 19.8 mm, and becomes regular and clear when the tapering length is longer and the tapered waist diameter is smaller. Annealing process is undertaken to achieve a high extension ratio of approximately 17 dB with free spectral range of 1.5 nm when the tapering length is 33 mm and the tapered waist diameter is approximately 5 μm. The temperature and axial strain dependences of the tapered SMS structure are characterized, and the measured temperature and strain coefficients are ＋7 pm/℃ and -9.536 pm/με, respectively.
optical OFDM superchannel has been proposed for high-speed optical transmission system, which consists of multiple individual-modulated OFDM subbands. We experimentally demonstrate OFDM subband switching functionality...
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An energy efficient spectrum allocation algorithm in bandwidth-variable optical switching networks is proposed, in which the modulation format of subcarriers is selected in a dynamic way according to the real-time tra...
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We propose and numerically demonstrate an ultrafast real-time ordinary differential equation （ODE） computing unit in optical field based on a silicon microring resonator, operating in the critical coupling region as...
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We propose and numerically demonstrate an ultrafast real-time ordinary differential equation （ODE） computing unit in optical field based on a silicon microring resonator, operating in the critical coupling region as an optical temporal differentiator. As basic building blocks of a signal processing system, a subtractor and a splitter are included in the proposed structure. This scheme is featured with high speed, compact size and integration on a siliconon-insulator （SOl） wafer. The size of this computing unit is only 35 μm × 45 μm. In this paper, the performance of the proposed structure is theoretically studied and analyzed by numerical simulations.
We proposed A novel method for characterizing the parasitics of semiconductor laser diode through measuring its scattering parameters. Experiments are designed and performed using our method, and furthermore, how the ...
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The tremendous demand on low cost optoelectronic systems that may be used for high-density data communications, real time sensing/detection and high-speed control/actuation has heated up the research and development i...
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The tremendous demand on low cost optoelectronic systems that may be used for high-density data communications, real time sensing/detection and high-speed control/actuation has heated up the research and development in silicon photonics, which studies the principles and technologies of merging electronics and photonics into the silicon platform. To make a silicon photonic system reality, the compatibility in device size and integration processing between the photonics and electronics is essential. Over the past years, unprecedented advancement on individual silicon photonic devices, such as waveguide, beam splitter, light source, modulator, and detector, have been reoorted, vet the Droaress in size and Drocessina issues are still under develoDment.
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