All optical digital logic gates library

Azeemuddin, Syed; Chaitanya, Ganta Vijay; Sayeh, M.R.

doi:10.1007/s12596-012-0076-y

Cited by 6 publications

(1 citation statement)

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“…When the light is passed in a counter clockwise direction, it suppresses the photons lasing in clockwise direction. If the output is extracted from the clockwise direction it will be low, the current was injected in counterclockwise direction which can be assumed as high input, thus representing an optical NOT gate [35].…”

Section: Proteretic Device Using All Optical Srlmentioning

confidence: 99%

Proteretic device: modelling and implementation in electronics and optical domain

Khan¹,

Azeemuddin²,

Sohel³

2022

Semicond. Sci. Technol.

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This paper discusses the phenomena of proteresis, commonly known as inverse hysteresis, and the various methods to implement it. Proteresis generates an advanced response when compared to hysteresis, which improves the system’s speed, maintaining the noise immunity intact. This feature of proteresis is seen in multiple naturally occurring phenomena. The paper implements proteresis in domains of electronics and optics, keeping in view essential constraints like area, power, throughput, and speed. The electronic domain consists of two models, one using CMOS circuits and the other using discrete components. The transistor-level design of a proteretic device is on 180nm CMOS technology, and proof of concept is demonstrated using post-layout simulations. This design is operated on a supply voltage of 1.8V and consumes significantly less power of 633μW at a moderate frequency of 10MHz. The second implementation utilizes discrete components wherein the operational amplifier (op-amp) is utilized to realize the proteretic design. A discussion on the boundary conditions for switching from hysteretic to proteretic is also presented. This design operates at a supply voltage of 12V from -6V to +6V and has a high drive current. Finally, the third implementation is in the optical field using Semiconductor Ring Lasers (SRL). Rate equations are used to model SRL’s and injection locking phenomenon is applied for switching, which is used for high-speed operations.

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Section: Proteretic Device Using All Optical Srlmentioning

confidence: 99%

Proteretic device: modelling and implementation in electronics and optical domain

Khan¹,

Azeemuddin²,

Sohel³

2022

Semicond. Sci. Technol.

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High‐capacity soliton transmission for indoor and outdoor communications using integrated ring resonators

Amiri

Alavi

Ali

2013

Int J Communication

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SUMMARYA system consisting of a series of microring resonators, incorporating an add/drop system, is presented in order to create ultra‐short spatial and temporal single and multisoliton pulses, which can be used for indoor and outdoor optical communications. Chaotic noise can be generated by a bright soliton pulse propagating inside a nonlinear microring resonator system. The results obtained show that a single temporal and spatial soliton pulse, with full width at half maximums of 75 fs, 80 fs, 700 fs, 4.4 ps, and 0.30 nm, can be generated. The add/drop system can be used to generate a high number of ultra‐short soliton pulses in the ranges of nanometer/second and picometer/second. The simulated multisolitons have full width at half maximums of 16 ps, 20 pm, 130 ps, and 35 pm and free spectrum ranges of 500 ps, 0.57 nm, 3.5 ns, and 1.4 nm, respectively. The multisolitons generated at the drop port can be used in indoor optical communications, where the ultra‐short pulses with a variety of central wavelengths (from λ = 1550 to λ = 1560) from the through port can be multiplexed‐demultiplexed along an optical fiber with a length of 50 km. The filtered signals can be obtained at the end of the transmission link used for optical outdoor communications. Copyright © 2013 John Wiley & Sons, Ltd.

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