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Generation of Sub-Nanosecond 586-nm Optical Pulses Based on the Synchronously Gain-Switched Laser Diodes with Optical Injection Locking
Jui-Hung Hung;Yuan Gao;Hejie Yan;Kazuo Sato;Hirohito Yamada;Lung-Han Peng;Hiroyuki Yokoyama
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Year: 2019 | Conference Paper |
Stimulated emission depletion (STED) technology incorporated with fluorescence microscopy envisions biomedical samples to sub-diffraction-limit resolution. Pulsed-mode STED microscopy is attractive because milliwatt-level low average optical power can induce notable STED effect [1]. However, it is difficult to find stable and compact optical pulse sources that are suitable for STED. The pulsed ope...Show More
Simultaneous multi-optical parametric oscillations and broad up-conversion on χ(2) nonlinear photonic crystals
H.-J. Lee;Y.-C. Fang;C.-M. Lai;W.-S. Tsai;N.-E. Yu;H. Yokoyama;A. Boudrioua;A.-H. Kung;L.-H. Peng
2016 Conference on Lasers and Electro-Optics (CLEO)
Year: 2016 | Conference Paper |
Parallel excitation of optical parametric oscillations was observed on PPLT dispersed with tri-QPM structures in the transverse direction to a nano-second pump beam. It led to simultaneous IR generation from 1000 to 1150nm with slope efficiency > 30%. When a nonlinearly-chirped PPLT was subject to such IR pump, it exhibits simultaneous broad green generation from 500 to 560nm with single pass effi...Show More
Speckle contrast reduction by linear and nonlinear photonic devices
E.-C. Liu;J.-H. Hong;S.-H. Fu;P.-C. Yeh;Y.-D Wang;C.-M. Lai;T.-L. Chiu;H. Yokoyama;A.-H. Kung;C.-C. Tu;C.-H. Lin;A. Boudrioua;N.-E. Yu;J.-H. Lee;H.-Y. Lin;L.-H. Peng
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR)
Year: 2013 | Conference Paper |
1-μm waveband 10-Gbit/s transmission over a 7-km single-mode hole assisted fiber using a harmonically mode-locked semiconductor laser
Naokatsu Yamamoto;Hideyuki Sotobayashi;Kouichi Akahane;Masahiro Tsuchiya;Keijiro Takashima;Hiroyuki Yokoyama
2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science
Year: 2008 | Conference Paper |
Cited by: Papers (1)
Surface-emitted THz-wave generation from two-dimensional PPLN
(CLEO). Conference on Lasers and Electro-Optics, 2005.
Year: 2005 | Conference Paper |
Surface-emitted continuous THz-wave generation from PPLN
(CLEO). Conference on Lasers and Electro-Optics, 2005.
Year: 2005 | Conference Paper |
High-peak-power picosecond optical-pulse generation with a gain-switched semiconductor laser, and high-efficiency wavelength conversion
2005 Pacific Rim Conference on Lasers & Electro-Optics
Year: 2005 | Conference Paper |
Cited by: Papers (1)
We generated 5-ps optical pulses directly from a gain-switched semiconductor laser at 1550-nm wavelength. By amplifying these optical pulses to 1-kW peak-power without serious nonlinear distortions, we successfully demonstrated high efficiency SHG and supercontinuum generation at a wavelength region of less than 1-μm.Show More
We report surface-emitted terahertz (THz)-wave generation from PPLN optical waveguide using difference frequency mixing. The waveguide was fabricated by machining process instead of conventional proton-exchange. The confinement of only optical pulses makes it possible to achieve higher conversion efficiency and minimize the absorption loss of THz-wave in PPLN crystal.Show More
Precise timing stabilization of a mode-locked laser at 1550 nm to an optical frequency standard
D.J. Jones;K.W. Holman;M. Notcutt;Jun Ye;J.K. Chandalia;L.A. Jiang;E.P. Ippen;H. Yokoyama
Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.
Year: 2003 | Conference Paper |
Using high-bandwidth feedback, we have synchronized the pulse train from a mode-locked semiconductor laser to an optical clock and achieved the lowest timing jitter (20 fs, 10 Hz to 10 MHz) for such devices.Show More
Terahertz-frequency-interval dual-wavelength optical pulse generation with semiconductor lasers
CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671)
Year: 2003 | Conference Paper |
Cited by: Papers (1)
Generation of automatically synchronized dual-wavelength optical pulses was successfully demonstrated by using a combination of semiconductor lasers and a four wave mixing device. These dual-wavelength optical pulses have a terahertz interval frequency, and thus they are useful for investigating nonlinear optic processes in terahertz region.Show More
Single Channel 160 Gbit/s (40 Gbit/s × 4) 300 km - Transmission Using EA Modulator based - OTDM Module and 40 GHz External - Cavity Mode-locked LD
H. Murai;M. Kagawa;H. Tsuji;K. Fujii;Y. Hashimoto;H. Yokoyama
2002 28TH European Conference on Optical Communication
Year: 2002 | Conference Paper |
Cited by: Papers (1)
40-GHz tunable optical pulse generation from a highly stable external-cavity mode-locked semiconductor laser module
Optical Fiber Communication Conference and Exhibit
Year: 2002 | Conference Paper |
In conclusion, we have demonstrated that a stable EC-MLLD module can generate wavelength tunable optical clock pulses up to 40-GHz by higher-harmonic hybrid mode-locking. Our EC-MLLD which has flexible tunabilities in wavelength, pulse repetition frequency, and pulse width will be very beneficial for the evaluation and the optimization of 40-Gbit/s based optical communication systems.Show More
Optical sampling measurement with all-optical clock recovery using mode-locked diode lasers
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171)
Year: 2001 | Conference Paper |
Optical sampling measurement of 160-Gbps signals incorporating all-optical clock recovery has been demonstrated. External-cavity mode-locked semiconductor laser modules, which directly generate coherent 2-ps optical pulses, were used for optical clock recovery and as an optical sampling pulse source. We accomplished the real-time observation of waveform distortion in 160-Gbps optical data signals ...Show More
3 /spl times/ 80 Gbit/s WDM-transmission over 600 km using mode-locked laser diodes with an 80 Gbit/s OTDM module
H. Murai;H.T. Yamada;K. Fujii;Y. Ozeki;I. Ogura;T. Ono;H. Yokoyama
Proceedings 27th European Conference on Optical Communication (Cat. No.01TH8551)
Year: 2001 | Conference Paper |
Cited by: Papers (5)
Highly reliable mode-locked semiconductor lasers and their applications
H. Yokoyama;Y. Hashimoto;H. Kurita;I. Ogura;T. Shimizu;R. Kuribayashi;M. Shirane;H. Yamada
Technical Digest. CLEO/Pacific Rim 2001. 4th Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.01TH8557)
Year: 2001 | Conference Paper |
Monolithic and external-cavity mode-locked semiconductor lasers are highly stabilized by means of electrical or optical signal injection incorporating a compact device-module packaging. Potential applications of these MLLDs are described for high-bit-rate optical communication systems at over 40 Gbps rate, and for ultrahigh-speed optical measurement systems.Show More
Noise measurements of a 45-GHz mode-locked laser diode
L.A. Jiang;M.E. Grein;E.P. Ippen;H.A. Haus;T. Shimizu;H. Kurita;H. Yokoyama
Summary form only given.The noise of a mode-locked laser diode (MLLD) can be broken into four orthogonal fluctuations: energy, carrier phase, frequency, and timing. We measure the carrier phase noise as well as the energy fluctuations of a bisection monolithically integrated 45-GHz repetition rate MLLD and compare it to theory. The width of pulses are 1.3 ps, the overall length of the laser diode ...Show More
A compact optical sampling measurement system using mode-locked laser-diode modules
A compact optical sampling measurement system with a temporal resolution of 2 ps has been developed. External-cavity mode-locked laser-diode 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 and 160-Gbit/s pseudorandom return-to-zero optical signa...Show More
All-optical subharmonic clock recovery and demultiplexing
Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079)
Year: 2000 | Conference Paper |
Cited by: Papers (5)
We have achieved a phase stabilized an-optical subharmonic clock recovery through a cascading two-stage optical-pulse-injection synchronization of mode-locked diode lasers. Based on this clock recovery scheme, successful 40 to 10 Gbps optical demultiplexing was also demonstrated.Show More
Demonstration of a 10 Gb/s channel-tunable mode-locked laser transmitter for OTDM networks
W. Hung;L.K. Chen;F. Tong;K.-P. Ho;L.Y. Chan;T. Shimizu;H. Yokoyama
A hybrid mode-locked laser transmitter was demonstrated to generate 10-GHz repetition rate optical short pulses that can be easily tuned to different TDM channels. The transient of the lasers during the channel-tuning period was investigated.Show More
Summary form only given. Precise tuning of monolithic mode-locked laser diodes to a 9.95238 GHz SDH frequency has been successfully obtained by controlling the effective length of the distributed Bragg reflector. This method is a very effective way to provide RZ and soliton optical pulse sources at a specific clock frequency through the present fabrication process.Show More
Error-free 40 Gbit/s OTDM transmission and all-optical demultiplexing with nonlinear optic functional devices based on mode-locked laser diodes
K. Yoneyama;R. Yokoyama;S. Ishii;S. Yamashita;H. Hashimoto;H. Kurita;T. Shimizu;I. Ogura;H. Yokoyama
24th European Conference on Optical Communication. ECOC '98 (IEEE Cat. No.98TH8398)
Year: 1998 | Conference Paper |
Cited by: Papers (1)
Error-free 40 Gbit/s OTDM transmission over 150 km utilising all-optical signal processing was successfully demonstrated. The cores of the present transmission experiment are picosecond optical pulse generation, optical clock extraction, and the picosecond optical gating all obtained by mode-locked laser diode devices.Show More
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