Oscillation characteristics improvement of a Vertical Cavity Surface Emitting Laser and consideration to its application

在本工作中，我们测试了垂直腔面发射激光器（VCSEL）在磁场中的振荡波长位移，因为我们期望VCSEL表现出更短的波长边移。我们还演示了一种产生物理随机数的新方法，通过具有极宽频带频率噪声轮廓的二极管激光器。激光频率的波动影响通过光频鉴别器传输的光的强度，随后检测到，作为随机波动。这允许我们同时生成8个随机比特流，由于并行处理8位模数转换器（ADC）采样的8位二进制数。最后，我们以40Gb/s的速率生成物理随机数。

In the present work, we tested the oscillation wavelength shift of a vertical-cavity surface-emitting laser (VCSEL) in a magnetic field, because we expected that the VCSEL would show a shorter wavelength side shift. We also demonstrated a novel method of generating physical random numbers, by means of a diode laser that has an extremely wide-band frequency-noise profile. Fluctuations in the laser frequency affect the intensity of the light transmitted through the optical frequency discriminator, detected thereafter, as random fluctuations. This allows us to simultaneously generate 8 random bit streams, due to the parallel processing of 8-digit binary numbers sampled by an 8-bit analog-to-digital converter (ADC). Finally, we generated physical random numbers at a rate of 40Gb/s.