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Semiconductor laser transmitter with a frequency-selective directional fibre coupler as an external resonator
Semiconductor laser transmitter with a frequency-selective directional fibre coupler as an external resonator
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机译:具有频率选择定向光纤耦合器作为外部谐振器的半导体激光发射器
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摘要
A narrow-band laser transmitter including a semiconductor laser and an external optical resonator in the form of a wavelength-selective fiber directional coupler. A partially reflecting feedback device is provided so that output power of the transmitter can be taken from the resonator. The frequency selective fiber directional coupler is formed by a dispersive double core fiber and the feedback device is supplied with radiant laser energy that is coupled over from one core into the other core and that portion of the radiant energy which has been coupled over is allowed to pass as output power of the transmitter by the feedback device.
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