Polarization-independent all-optical clock division using a semiconductor optical amplifier/grating filter switch

Author

Lee, Hyuek Jae ; Kim, Hae Geun

Author_Institution

Photonic Switching Sect., Electron. & Telecommun. Res. Inst., Daejeon, South Korea

Volume

11

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

469

Lastpage

471

Abstract

We propose and experimentally demonstrate, for the first time to our knowledge, polarization-independent all-optical clock division (CD) of an optical pulse train at 2.88 GHz. This is achieved using a semiconductor optical amplifier (SOA)/grating filter switch, where the SOA acts as a spectral shifter by a self phase modulation and the grating filter acts as a spectral shutter. The proposed scheme is very insensitive to the polarization of input pulses and requires very low switching energy (/spl sim/102 fJ). After the all-optical CD operation, we have obtained the output pulse train at 1.44 GHz, which is half the input repetition rate, with high extinction ratio (>20 dB).

Keywords

clocks; diffraction gratings; high-speed optical techniques; optical transmitters; optical waveguide filters; semiconductor optical amplifiers; time division multiplexing; 1.44 GHz; 102 fJ; 2.88 GHz; all-optical CD operation; grating filter switch; high extinction ratio; input pulses; low switching energy; optical pulse train; output pulse train; polarization-independent all-optical clock division; repetition rate; self phase modulation; semiconductor optical amplifier; spectral shifter; spectral shutter; Clocks; Extinction ratio; Gratings; Optical filters; Optical polarization; Optical pulses; Optical switches; Phase modulation; Pulse amplifiers; Semiconductor optical amplifiers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.752551

Filename

752551