2012 Fiscal Year Final Research Report
Oscillation characteristics improvement of a Vertical Cavity Surface Emitting Laser and consideration to its application
| Project/Area Number |
22560035
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Niigata University |
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Principal Investigator |
SATO Takashi 新潟大学, 自然科学系, 教授 (10143752)
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| Co-Investigator(Kenkyū-buntansha) |
OHKAWA Masashi 新潟大学, 自然科学系, 教授 (90213644)
OHDAIRA Yasuo 新潟大学, 自然科学系, 准教授 (10361891)
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| Project Period (FY) |
2010 – 2012
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| Keywords | レーザ |
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| Research Abstract |
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.
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