Title :
A 24-Gsps 3-bit Nyquist ADC using InP HBTs for electronic dispersion compensation
Author :
Nosaka, Hideyuki ; Nakamura, Makoto ; Ida, Minom ; Kurishima, Kenji ; Shibata, Tsugumichi ; Tokumitsu, Masami ; Muraguchi, Masahiro
Author_Institution :
NTT Photonics Lab., NTT Corp., Atsugi, Japan
Abstract :
A 3-bit flash analog-to-digital converter (ADC) for electronic dispersion compensation (EDC) was developed using InP HBTs. Nyquist operation was developed using InP HBT. Nyquist operation was confirmed up to 24 Gsps, which enables oversampling acquisition for 10 Gbits/s nonreturn-to-zero (NRZ) signals. The ADC can also be operated at up to 37 Gsps for low input frequencies. To reduce aperture jitter and achieve a wideband of over 7 GHz, an analog input signal for all latched comparators are provided as travelling waves through coplanar transmission lines.
Keywords :
III-V semiconductors; analogue-digital conversion; coplanar transmission lines; equalisers; heterojunction bipolar transistors; indium compounds; integrated circuit design; jitter; InP; Nyquist operation; OC-192; analog input signal; aperture jitter reduction; chromatic dispersion; coplanar transmission lines; digital signal processing; electronic dispersion compensation; equalizer; flash analog-to-digital converter; heterojunction bipolar transistor; latched comparators; nonreturn-to-zero signals; polarization-mode dispersion; travelling waves; Analog-digital conversion; Clocks; Coplanar transmission lines; Heterojunction bipolar transistors; Indium phosphide; Optical fiber dispersion; Optical receivers; Optical signal processing; Sampling methods; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1335812
