Title :
High bit rate clock recovery of NRZ data by all-optical processing in a semiconductor optical amplifier and direct optical injection locking of a self-oscillating phototransistor
Author :
Bilenca, A. ; Dahan, D. ; Lasri, J. ; Eisenstein, G. ; Ritter, D.
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
fDate :
3/1/2002 12:00:00 AM
Abstract :
In this letter, we describe a novel all-optical processing technique of nonreturn-to-zero signals in a semiconductor optical amplifier, which enables spectral enhancement at the bit rate frequency. The processed optical signal is used for direct optical injection locking of an oscillator based on a heterojunction bipolar phototransistor. Clock extraction at 10 Gb/s and potential operation at 40 Gb/s and beyond are demonstrated.
Keywords :
heterojunction bipolar transistors; integrated optoelectronics; optical receivers; phase locked oscillators; phototransistors; semiconductor optical amplifiers; synchronisation; timing; 10 Gbit/s; 40 Gbit/s; all-optical processing technique; bit rate frequency; clock extraction; counterpropagating configuration; degenerate cross-gain modulation; direct optical injection locking; heterojunction bipolar phototransistor; high bit rate clock recovery; nonreturn-to-zero signals; optical receiver; phase-locked clock-generating oscillator; self-oscillating phototransistor; semiconductor optical amplifier; spectral enhancement; timing extraction; Bit rate; Clocks; Frequency; Heterojunctions; Injection-locked oscillators; Optical signal processing; Phototransistors; Semiconductor optical amplifiers; Signal processing; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
