All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer

被引：6

作者：

Gayen, Dilip Kumar ^{[1
]}

Chattopadhyay, Tanay ^{[2
]}

Pal, Rajat Kumar ^{[3
]}

Roy, Jitendra Nath ^{[4
]}

机构：

[1] Coll Engn & Management, Dept Comp Sci, Midnapur E 721171, WB, India

[2] WBPDCL, Kolaghat Thermal Power Stn, Purba Medinipur 721137, W Bengal, India

[3] Univ Calcutta, Dept Comp Sci & Engn, Kolkata 700009, W Bengal, India

[4] NIT Agartala, Dept Phys, Agartala, India

来源：

CHINESE OPTICS LETTERS | 2011年 / 9卷 / 06期

关键词：

WAVELENGTH CONVERSION; ARITHMETIC UNIT; BOOLEAN XOR; SAGNAC; AMPLIFIER; LOGIC; PERFORMANCE; OPERATIONS; SCHEME; SWITCH;

D O I：

10.3788/COL201109.062001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and describe an all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer (TOAD) using a set of optical switches. The prefix tree adder is useful in compound adder implementation. It is preferred over the ripple carry adder and the carry lookahead adder. We also describe the principle and possibilities of the all-optical prefix tree adder. The theoretical model is presented and verified through numerical simulation. The new method promises higher processing speed and accuracy. The model can be extended for studying more complex all-optical circuits of enhanced functionality in which the prefix tree adder is the basic building block.

引用

页数：5

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