Title :
An Optically Clocked Transistor Array for High-Speed Asynchronous Label Swapping: 40 Gb/s and Beyond
Author :
Urata, Ryohei ; Takahashi, Ryo ; Suemitsu, Tetsuya ; Nakahara, Tatsushi ; Suzuki, Hiroyuki
Author_Institution :
NTT Corp., Atsugi
fDate :
3/15/2008 12:00:00 AM
Abstract :
We describe the development of an optically clocked transistor array (OCTA) interface device for label swapping high-speed asynchronous burst optical packets. The OCTA integrates the three critical functions of serial-to-parallel (SP) conversion, parallel-to-serial (PS) conversion, and clock-pulse generation into a simple optoelectronic integrated circuit (OEIC) to create a single-chip interface between the input/output baseband optical labels and a CMOS label processor. The result is a high-performance label swapping solution which is compact and low power. In this paper, a detailed investigation of the design and optimization of the circuit is first performed, followed by testing of device stability under subsystem operating conditions. Finally, demonstrations of single-channel switching speeds allowing greater than 100-Gb/s operation, 40-Gb/s SP and PS conversion with an eight-channel OCTA, and error-free label swapping of 10-Gb/s asynchronous optical packets with a prototype label swapper module are described.
Keywords :
asynchronous circuits; clocks; transistor circuits; CMOS label processor; bit rate 40 Gbit/s; clock pulse generation; high speed asynchronous label swapping; interface device; optically clocked transistor array; optoelectronic integrated circuit; parallel to serial conversion; serial to parallel conversion; single chip interface; Baseband; CMOS integrated circuits; Circuit testing; Clocks; High speed optical techniques; Multiprotocol label switching; Optical arrays; Optical devices; Optoelectronic devices; Photonic integrated circuits; High electron-mobility transistor (HEMT); label swapping; metal–semiconductor–metal (MSM); optical packet switching; optoelectronic integrated circuit (OEIC);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.915279