Title :
Encoding circuits for low power optical on-chip communications
Author :
Olivieri, Mauro ; Pappalardo, Francesco ; Visalli, Giuseppe
Author_Institution :
Dept. of Electron. Eng., La Sapienza Univ. of Rome, Italy
Abstract :
The increased demands of high data-rate communications could be satisfied by optical semiconductor elements. Actually, these devices represent an important role in the total energy budget available for the chip. This work presents a low-power encoding technique which optimizes the statistical distribution so as to reduce the energy dissipated in optical communications. We evaluated the encoding circuits referring to 180 nm, 130 nm and 90 nm CMOS technologies. Our results show an up to 12% electrical current reduction in the on-chip light emitter.
Keywords :
CMOS integrated circuits; encoding; integrated circuit interconnections; low-power electronics; optical interconnections; optical receivers; optical transmitters; 130 nm; 180 nm; 90 nm; CMOS; FIFO asynchronous memory; finite state machines; light emitter electrical current reduction; low power on-chip communications; low-power bus encoding; on-chip communications encoding circuits; optical buses; optical on-chip communications; receiver consumed energy; static signals distribution; transmitter emitted energy; Circuits; Encoding; Optical fiber communication; Optical filters; Optical receivers; Optical transmitters; Power lasers; Quantum well lasers; Semiconductor lasers; Stimulated emission;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465808
