Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers
نویسندگان
چکیده
The high security of optical phased array (OPA) signals is an important requirement for OPA-based wireless communication (OWC). We propose a method improving the OWC systems using optically injection-locked (OIL) semiconductor lasers. theoretically demonstrate amplitude and phase modulation OIL-OPA elements by controlling injection-locking parameters OIL When Taylor window function applied as profile OPA transmitter, sidelobe level decreases 22 dB unsecured distance reduces 10 times compared to case without function. In addition, area factor becomes 0.8%.
منابع مشابه
application of upfc based on svpwm for power quality improvement
در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...
15 صفحه اولModulation properties of optically injection-locked quantum cascade lasers.
A rate equation analysis on the modulation response of an optical injection-locked quantum cascade laser is outlined. It is found that the bifurcation diagram exhibits both bistable and unstable locked regions. In addition, the stable locked regime widens as the linewidth enhancement factor increases. It is also shown that both positive and negative optical detunings as well as strong injection...
متن کاملTwo-dimensional pseudo-random optical phased array based on tandem optical injection locking of vertical cavity surface emitting lasers.
We demonstrate, both theoretically and experimentally, a pseudo-random, two-dimensional optical phased array (OPA) concept based on tandem injection locking of 64-element vertical cavity surface emitting laser (VCSEL) arrays. A low cavity-Q VCSEL design resulted in an injection locking optical power of less than 1 μW per VCSEL, providing large OPA scaling potential. Tandem injection locking of ...
متن کاملOptical computing by injection-locked lasers
A programmable optical computer has remained an elusive concept. To construct a practical computing primitive equivalent to an electronic Boolean logic, one should find a nonlinear phenomenon that overcomes weaknesses present in many optical processing schemes. Ideally, the nonlinearity should provide a functionally complete set of logic operations, enable ultrafast all-optical programmability,...
متن کاملDemonstration of CoWDM Using a DPSK Modulator Array with Injection-locked Lasers
In this paper a practical implementation of CoWDM is demonstrated for the first time using injection locked lasers and a DPSK modulator array. For a 31.99Gbit/s system (3 subcarriers at 10.664Gbit/s) the null-to-null spectral bandwidth was only 42.656GHz and the average receiver sensitivity measured was -33.5dBm when all sub-carrier phases were optimized. Introduction: The rapid growth in video...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photonics
سال: 2021
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics8110469