An Optoelectronic Clock Recovery Circuit Using a Resonant Tunneling Diode and a Uni-Traveling-Carrier Photodiode

Koichi MURATA  Kimikazu SANO  Tomoyuki AKEYOSHI  Naofumi SHIMIZU  Eiichi SANO  Masafumi YAMAMOTO  Tadao ISHIBASHI 

Publication
IEICE TRANSACTIONS on Communications  Vol.E82-B  No.8  pp.1228-1235
Publication Date: 1999/08/20
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
optoelectronic integrated circuit,  clock recovery circuit,  resonant tunneling diode,  uni-traveling-carrier photodiode,  optical communication systems, 

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Summary: 
A clock recovery circuit is a key component in optical communication systems. In this paper, an optoelectronic clock recovery circuit is reported that monolithically integrates a resonant tunneling diode (RTD) and a uni-traveling-carrier photodiode (UTC-PD). The circuit is an injection-locked-type RTD oscillator that uses the photo-current generated by the UTC-PD. Fundamental and sub-harmonic clock extraction is confirmed for the first time with good clock recovery circuit characteristics. The IC extracts an electrical 11.55-GHz clock signal from 11.55-Gbit/s RZ optical data streams with the wide locking range of 450 MHz and low power dissipation of 1.3 mW. Furthermore, the extraction of a sub-harmonic clock from 23.1-Gbit/s and 46.2-Gbit/s input data streams is also confirmed in the wider locking range of 600 MHz. The RMS jitter as determined from a single sideband phase noise measurement is extremely low at less than 200 fs in both cases of clock and sub-harmonic clock extraction. To our knowledge, the product of the output power and operating frequency of the circuit is the highest ever reported for injection-locked-type RTD oscillators. These characteristics indicate the feasibility of the optoelectronic clock recovery circuit for use in future ultra-high-speed fully monolithic receivers.