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Ultrafast all-optical ALU operation using a soliton control within the cascaded InGaAsP/InP microring circuits

Soysouvanh, S., Phongsanam, P., Mitatha, S., Ali, J., Yupapin, P., Amiri, I. S., Grattan, K. T. V. ORCID: 0000-0003-2250-3832 and Yoshida, M. (2019). Ultrafast all-optical ALU operation using a soliton control within the cascaded InGaAsP/InP microring circuits. Microsystem Technologies, 25(2), pp. 431-440. doi: 10.1007/s00542-018-4011-2


A dark-bright soliton conversion is used to perform the two arithmetic logic unit operations namely adder and subtractor operations. The advantage of the system such as power stability, non-dispersion and the dark-bright soliton phase conversion control can be obtained. The input source into the circuit is the bright soliton pulse, with the pulse width of 35 ps, the peak power at 1.55 µm is 1 mW. By using the dark-bright soliton conversion pair, the generated logic bits can be controlled, and the secure bits can be achieved. The simulation results show the output signal with a minimum loss of only 0.1% with respect to a low input power of 1 mW, and ultra-fast response time of about 1 ps can be achieved. It gives the ultra-high bandwidth of more than 40 Gbits−1. The circuit composes six microring resonators made of InGaAsP/InP material with smaller ring radii of 1.5 µm, and the total physical scale of the circuit less than 100 µm2.

Publication Type: Article
Additional Information: This is a post-peer-review, pre-copyedit version of an article published in Microsystem Technologies. The final authenticated version is available online at:
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: School of Mathematics, Computer Science & Engineering > Engineering > Electrical & Electronic Engineering
Date available in CRO: 10 Jul 2018 07:45
Date deposited: 10 July 2018
Date of acceptance: 18 June 2018
Date of first online publication: 25 June 2018
Text - Accepted Version
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