Title :
Ultra-Compact 100 GbE Transmitter Optical Sub-Assembly for 40-km SMF Transmission
Author :
Kanazawa, S. ; Fujisawa, T. ; Nunoya, Nobuhiro ; Ohki, Akira ; Takahata, K. ; Sanjoh, H. ; Iga, R. ; Ishii, Hiroyuki
Author_Institution :
NTT Photonics Labs., NTT Corp., Atsugi, Japan
Abstract :
The first ultra-compact transmitter optical sub-assembly (TOSA) has been developed for the metro-area 100 Gbit/s Ethernet (100 GbE) system. Four DFB lasers integrated with electro-absorption modulators (EADFB lasers) operated at 25.8 Gbit/s and an optical multiplexer are monolithically integrated on one chip. The chip was assembled in the compact TOSA using a three-dimensional (3D) RF circuit board supported by a spacer. The new structure provides compact and high-density interconnection with low crosstalk between RF signal lines. The TOSA is very small at just 8.0 mm × 35 mm × 6.5 mm including the receptacle and the flexible printed circuit (FPC) and could be installed in next-generation small form 100 GbE transceivers. In addition, an error-free transmission is demonstrated through 40 km of single-mode fiber at 100 Gbit/s with a modulation voltage of 2 V.
Keywords :
distributed feedback lasers; electroabsorption; flexible electronics; integrated circuit interconnections; local area networks; multiplexing equipment; optical modulation; optical transceivers; printed circuits; radiofrequency integrated circuits; three-dimensional integrated circuits; 3D RF circuit board; DFB lasers integration; EADFB lasers; FPC; RF signal lines; SMF transmission; bit rate 100 Gbit/s; bit rate 25.8 Gbit/s; compact TOSA; distributed feedback lasers; electroabsorption modulators; error-free transmission; fĺexible printed circuit; high-density interconnection; low crosstalk; metro-area Ethernet system; modulation voltage; monolithically integrated optical multiplexer; next-generation small form transceivers; single-mode fiber; spacer; three-dimensional RF circuit board; ultra-compact transmitter optical subassembly; voltage 2 V; Arrays; Crosstalk; Lasers; Optical transmitters; Printed circuits; Radio frequency; Wires; 100 Gigabit ethernet; Distributed feedback laser; EADFB laser array; InGaAlAs; TOSA; electro-absorption modulator; photonic integrated circuits;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2218793
