Wavelength converter is key equipment in dynamic optical networks and the injection locking technology in semiconductor lasers is a promising low cost candidate. High speed injection-locked wavelength conversion (10 Gbit/s, NRZ, PRBS) has been achieved in our simulations and experiments, both logically inverting and non-inverting. In this paper, injection-locked model in FP lasers is analyzed and the results are consistent with those in both static and
dynamic experiments. The situation when input and output lights are at different facets is also theoretically compared with that at the same facet and it's derived that the latter may have better performance.
An injection locked semiconductor lasers is a promising low cost alternative to implement an all-optical wavelength conversion. We demonstrate high speed wavelength conversion in this paper by injecting dual wavelength laser into a laser diode. The 10Gb/s inverting and non-inverting conversions are obtained in experiments. 30nm conversion range is also achieved.
Kane and Byer reported the first monolithic non-planar miniature ring laser in 1985. An intrinsic optical diode enforces unidirectional and hence single-frequency oscillation of this device. We put forward another kind of the non-planar ring lasers, in which the corner cube prism is the eye element. The non-planar traveling ray in the corner cube, Faraday rotation in the Nd:YAG crystal placed in a magnetic field and the different output coupling in S and P polarization can yield the single-frequency laser output in theory. The distorted Porro prism made by Nd:YAG crystal plays the role of the laser medium and the laser output coupler is realized by one of the two roof surfaces. The whole system can be made as a quasi-monolithic laser by optical bonding technology.
A coherent 1.06micrometers all solid state laser radar system is proposed. The system uses a LD pumped monolithic Nd:YAG ring laser as the source. Very stable output of the laser is linearly frequency modulated by an acousto-optic modulator. The wide modulation bandwidth is achieved by cascading two Bragg cells, in which each cell produces half of the total bandwidth. In order to extinguish the laser beam deflection caused by the Bragg cell, the propagation directions for the acoustic waves are arranged to be opposite in the two cells. Two single model optical fiber couplers are utilized. One is used as a beam splitter and divides the modulated laser beam into two parts: the transmitted signal beam and the local reference beam. The other coupler mixes the target-reflected signal beam with the local reference beam. The output signal form this coupler is detected by an InGaAs PIN photodiode, then analyzed by a RF electronic spectrum analyzer. The linearly frequency modulated CW ladar system can be applied for measuring both range and velocity of the target. Using this ladar system, true 3D target imaging can be achieved by additional use of a laser beam-scanning device.
Kane and Byer reported the first monolithic non-planar miniature ring lasers in 1985. An intrinsic optical diode enforces unidirectional and hence single-frequency oscillation of this device. It has the advantages of compactness, reliability and high efficiency. We put forward another form of the non-planar ring lasers, in which the corner cube prism is the key element and the Nd:YAG crystal is used as a Porro prism to enclose the ring resonator. The phase shift due to the total internal reflections of the three differently orientated reflection planes of the corner cube prism, Faraday rotation in the Nd:YAG crystal placed in a magnetic field and the different output coupling in S and P polarization form an optical diode and enforce the single- frequency generating. A round trip analysis of the polarization properties of the resonator is made by the evaluation of Jones matrix. The results of our initial experiment are given in the paper.
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