High-Power ($&gt; 110$ mW) Superluminescent Diodes by Using Active Multimode Interferometer

Zang, Zhigang; Minato, Takahiro; Navaretti, Paolo; Hinokuma, Yasuhiro; Duelk, M.; Vélez, Christian; Hamamoto, Kiichi

doi:10.1109/lpt.2010.2044994

Cited by 139 publications

(36 citation statements)

References 13 publications

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“…The advent of low-coherence light sources, such as superluminescent diode (SLD) 4,[16][17][18] and amplified spontaneous emission (ASE) light sources, 4 permit the elimination of Rayleigh backscattering and Kerr effect errors. An ASE light source is used considering the stable wavelength with temperature sensitivities nearly two orders of magnitude smaller than a SLD.…”

Section: Measurement Setupmentioning

confidence: 99%

New measurement method for eigen frequency of a fiber optic gyroscope

Yang

2013

Opt. Eng

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Abstract. Eigen frequency is a very important parameter in a fiber optic gyroscope (FOG). To establish an accurate measurement of eigen frequency, we propose a new measurement method based on employing the square-wave, over-bias modulation with double eigen frequency. We investigate the proposed method both experimentally and theoretically. Experimental results show the measurement accuracy of eigen frequency is better than AE5 Hz, which satisfies the eigen frequency measurement of most FOGs. A theoretical model of the method gives a good explanation of the experimental results. The method is simple, low-cost, and easy to implement. In addition, it can greatly improve the accuracy of the eigen frequency measurement without needing additional hardware for existing gyro systems. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Measurement Setupmentioning

confidence: 99%

New measurement method for eigen frequency of a fiber optic gyroscope

Yang

2013

Opt. Eng

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“…For instance, by using the Goos-Hanchen shift to design high-power superluminescent diodes of up to 115 mW, a low thermal resistance of 4.83 K∕W in active multimode interferometer (active-MMI) superluminescent light-emitting diodes (SLEDs) and a high coupling efficiency of 66% of the fiber-coupled power of active-MMI SLEDs into single-mode fiber have been obtained. [6][7][8] However, I do not think that the problem of the evanescent light wave has been solved satisfactorily. According to the electromagnetic wave theory, an evanescent wave of light should decay exponentially along the z direction and move forward infinitely in the x direction.…”

Section: Introductionmentioning

confidence: 99%

Evanescent wave of a single photon

Li¹

2013

Opt. Eng

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Abstract. A photon model is proposed, and the parameter equations of the photon are obtained. This model can explain the polarization, total reflection, evanescent wave, and Goos-Hanchen shift of a single photon. The evanescent waves of photons with different frequencies are refractively dispersed. The Goos-Hanchen shift is dependent on the difference between the two refractive indices of media, the incident angle, and the frequency of the photon. According to this model, an evanescent wave of light does not decay exponentially along the z direction and does not propagate along the x direction infinitely. The laws of refraction and reflection for a single photon can be derived. The refractive dispersion of light can be explained. According to this model, every photon is polarized. Polarization is the intrinsic nature of the photon. The motion of a single photon is either clockwise or counterclockwise. The so-called unpolarized light refers to light that consists of an equal number of photons with clockwise motion and counterclockwise motion. The trajectories of two photons with the same frequency but opposite spiral directions are mirror-image isomers. They cannot be superimposed upon each other. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…Surface plasmon polaritons (SPPs) have been considered as one of the most confident ways to overcome the diffraction limits of optical waves [1], and thus have attracted lots of attention in various areas, such as wavelength waveguides [2], combiners or couplers [3,4], semiconductor device [5][6][7], and so on. Usually, subwavelength slits or gratings in a metal film are employed to reduce the momentum mismatch between the SPP modes and the p-polarized light, so that SPPs will propagate along both directions on the metal/insulator interfaces for all those symmetrical structures, such as rectangle grooves, slot cavities, and so on [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%