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Optical Sampling System Using Compact and Stable External-Cavity Mode-Locked Laser-Diode Modules
Masayuki SHIRANE Yoichi HASHIMOTO Hirohito YAMADA Hiroyuki YOKOYAMA
IEICE TRANSACTIONS on Electronics
Publication Date: 2004/07/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Ultrafast Photonics)
optical sampling, mode-locking, eye pattern, four-wave mixing, all-optical clock recovery, optical gate,
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A compact and stable optical sampling measurement system with a temporal resolution of 2 ps has been developed. External-cavity mode-locked laser-diode (EC-MLLD) modules, which directly generate coherent 2-ps optical pulses, were used as the optical sampling pulse sources. Real-time measurement of the recovery dynamics in semiconductor saturable absorber devices has been achieved by optical sampling combined with the pump-probe method. An EC-MLLD module was also utilized for simple sub-harmonic all-optical clock recovery based on the synchronization of the mode-locking operation by optical-pulse injection. Optical sampling measurement of 160-Gbit/s return-to-zero signals incorporating all-optical clock recovery has been demonstrated.