Title :
Ultrafast, low power, and highly stable all-optical switching in an all polarization maintaining fiber Sagnac interferometer
Author :
Jinno, Masahiko ; Matsumoto, Takao
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
fDate :
5/1/1990 12:00:00 AM
Abstract :
An ultrafast, low-power, and highly stable all-optical switch in a nonlinear Sagnac interferometer is reported. To achieve low-power, highly stable, and walkoff free switching, use is made of a small-core dispersion-shifted polarization-maintaining fiber loop (200 m in length) which has a small group delay difference between the wavelengths of the input signal and the control pulse. To achieve complete polarization stability, a wavelength-sensitive polarization-maintaining fiber coupler is employed. Highly stable and walkoff free all-optical switching is demonstrated at 5 Gb/s.<>
Keywords :
fibre optic sensors; high-speed optical techniques; light interferometers; light polarisation; optical dispersion; optical switches; 200 m; 5 Gbit/s; all-optical switching; control pulse; group delay difference; input signal; nonlinear Sagnac interferometer; polarization maintaining fiber Sagnac interferometer; polarization stability; small-core dispersion-shifted polarization-maintaining fiber loop; ultrafast; walkoff free switching; wavelength-sensitive polarization-maintaining fiber coupler; Acoustic pulses; Communication switching; Optical fiber communication; Optical fiber couplers; Optical fiber devices; Optical fiber dispersion; Optical fiber polarization; Propagation delay; Sagnac interferometers; Switches;
Journal_Title :
Photonics Technology Letters, IEEE
