نانومقیاس

نانومقیاس

طراحی و بهینه سازی کلیدهای تمام نوری با قابلیت استفاده در مدارهای مجتمع نوری

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشگاه تربیت دبیر شهید رجایی
2 IRAN, Tehran, Shabanlou
چکیده
در سال های اخیر استفاده از سنسورهای فوق سریع با ابعاد کوچک جهت کاربرد در مدارات مجتمع تمام نوری مورد توجه بسیاری از محققان قرار گرفته است. در این مقاله طرح پیشنهادی یک کلید نوری مبتنی بر بلور فوتونی با دو الگوی مستقیم و متقاطع با استفاده از ترکیب چهار تشدیدگر و دو موجبر مرکزی و فرود/فزون ارائه شده است. این بلور فوتونی به صورت شبکه مربعی با ثابت شبکه 543 نانومتر به صورت آرایشی از 21 ×29 میله های دی الکتریک در صفحه X Z در هوا تشکیل شده است. این میله‌های دی الکتریک از جنس سیلیکون در هوا با شعاع 109 نانومتر، ضریب شکست خطی 46/3 ، و ضریب پرشدگی 2/0 می‌باشند. پارامترهای کنترلی این کلید شامل شعاع و ضریب شکست میله‌های تزویج، پراکندگی و داخلی می‌باشند. پارامترهای عملکردی کلید نوری مانند توان خروجی نرمال شده، نرخ بیت، زمان پاسخ، نسبت خاموشی، تلفات داخلی و تداخل با استفاده از روش تفاضل محدوده در حوزه زمان تجزیه و تحلیل شده است. در این کلید پیشنهادی زمان پاسخ دهی در حالت مستقیم 123/0 پیکوثانیه و در حالت متقاطع 485/0 پیکوثانیه است همچنین نرخ انتقال دیتا در حالت مستقیم 13/8 ترابیت بر ثانیه و در حالت متقاطع 06/2 ترابیت بر ثانیه است. در این طرح محدوده تغییرات همشنوایی با الگوی مستقیم و متقاطع بین 6/5 – دسیبل تا 32/17- دسیبل، نسبت خاموشی در حالت مستقیم بین 031/9 – دسیبل تا 82/6- دسیبل و در حالت متقاطع بین 31/2- دسیبل تا 13/8- دسیبل تغییر می کنند.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Design and optimization of all-optical switches with the ability to be used in integrated optical circuits

نویسندگان English

Masoud Mohammadi 1
mahmood Seifouri 2
saeed Olyaee 2
1 IRAN, Tehran, Shabanlou
2 IRAN, Tehran, Shabanlou
چکیده English

In recent years, the use of ultrafast sensors with small dimensions for application in all-optical integrated circuits has attracted the attention of many researchers. In this paper, a proposed design of an optical switch based on a photonic crystal with two direct and crossed patterns using a combination of four resonators and two central and Add/Drop waveguides is presented. This photonic crystal is formed in the form of a square lattice with a lattice constant of 543 nm in the form of an arrangement of 21 × 29 dielectric rods in the X Z plane in air. These dielectric rods are made of silicon in air with a radius of 109 nm, a linear refractive index of 3.46, and a filling factor of 0.2. In this switch, the control factors include the radius and refractive index of the coupling, dispersion, and internal rods. The performance parameters of the optical switch such as normalized output power, bit rate, response time, extinction ratio, internal loss, and interference are analyzed using the Finite-difference time-domain method. In this proposed switch, the response time in the direct mode is 0.123 picoseconds and in the cross mode is 0.485 picoseconds. Also, the data transfer rate in the direct mode is 13.8 terabits per second and in the cross mode is 2.06 terabits per second. In this design, the range of crosstalk changes with the direct and cross logo is between -5.6 dB to -17.32 dB, the extinction ratio in the direct mode is between -9.031 dB to -6.82 dB and in the cross mode is between -31.2 dB to -13.8 dB.

کلیدواژه‌ها English

Photonics
optical switch
resonator
integrated circuits
all-optical
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دوره 12، شماره 1
بهار 1404
صفحه 63-74

  • تاریخ دریافت 14 دی 1403
  • تاریخ بازنگری 24 خرداد 1404
  • تاریخ پذیرش 02 مرداد 1404