Title :
New all-optical RIN suppressing, image rejection receiver with efficient use of LO- and signal-power
Author :
Pedersen, R.J.S. ; Ebskamp, F.
Author_Institution :
Center for Broadband Telecommun., Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
An all-optical method of achieving a heterodyne signal is presented whereby the local oscillator (LO) relative intensity noise (RIN) and the image channel have been suppressed while efficient use of both LO and signal power is made. This is achieved with only one photodetector, compared to four for the conventional optical-electrical configuration. A 15-dB reduction of LO RIN can be obtained for a relative channel bandwidth of 50%. The image channel of the same bandwidth is suppressed by almost 20 dB.<>
Keywords :
demodulation; light interferometers; optical images; optical modulation; optical receivers; random noise; LO-power; all-optical RIN suppressing; all-optical method; heterodyne signal; image channel; image rejection receiver; local oscillator; optical-electrical configuration; photodetector; relative channel bandwidth; relative intensity noise; signal-power; Frequency; Noise level; Optical coupling; Optical fiber networks; Optical interferometry; Optical mixing; Optical noise; Optical receivers; Phase noise; Photodetectors;
Journal_Title :
Photonics Technology Letters, IEEE
