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A GaSb/GaAs quantum-dot light-emitting diode (QD LED) with a single GaSb QD layer is investigated in this paper. The room-temperature photoluminescence (PL) peak blue shift with increasing excitation ...
First Demonstration of Error-Free Operation of a Full Silicon On-Chip Photonic Link
Optoelectronics Photonic Integrated Circuits
2015/5/26
We report first 3-Gb/s data measurements for a photonic link including a microring modulator connected optically by a waveguide to a Germanium detector. Error-free operation is achieved with a 2-dB el...
Wide-tuning (65 nm) Semi-cooled (50oC) Operation of a Tunable Laser based on a Novel Widely Tunable Filter
Semiconductor lasers Lasers tunable
2015/5/25
A tunable laser based on a medium wavelength selectivity tunable filter named a lateral-grating-assisted lateral-co-directional-coupler was developed. A wide tuning range of over 65 nm with SMSR of ov...
Broadband Wavelength Conversion with S/C/L-band Flexible Operation Using Cross-Gain-Modulation in a Single Quantum Dot SOA
All-optical devices Quantum-well dot devices
2015/5/22
We experimentally demonstrated operating original and converted wavelengths flexible wavelength conversion using cross-gain-modulation in a single quantum dot semiconductor optical amplifier with cove...
10-Gb/s - 80-km operation of full C-band InP MZ modulator with linear-accelerator-type tiny in-line centipede electrode structure directly driven by logic IC of 90-nm CMOS process
Waveguide modulators Traveling-wave devices
2015/5/21
InP MZ modulator of sub 1-V pp driving voltage with quasi-traveling-wave electrode structure and Logic IC of 90-nm CMOS process as its driver were developed. Their applicability was demonstrated throu...
Less than 0.19-dB Transient Gain Excursion AGC-EDFA with Digital Control for 20-Channel Add/Drop Equivalent Operation
Transient Gain Excursion AGC-EDFA Digital Control 20-Channel Add/Drop
2015/5/20
We have developed a digitally controlled AGC-EDFA by combining an FF-controlled pump-LD and an FB-controlled VOA. An FPGA is used to finely tune the gain setting of the pump current with a wide dynami...
32-Channel, Injection-Locked WDM-PON SFP Transceivers for Symmetric 1.25 Gbps Operation
32-Channel Injection-Locked WDM-PON SFP Transceivers 1.25 Gbps
2015/5/18
A 32-channel, WDM-PON SFP transceiver is demonstrated at 1.25 Gbps with C-band transmit and L-band receive functionality. The transceiver is based on a wide-band, injection-locked Fabry-Perot laser. B...
FSK+ASK/ASK Operation for Optical 20/10 Gbps Access Networks with Simple Reflective User Terminals
FSK+ASK/ASK Operation Access Network User Terminals Simple Reflective
2015/5/18
Doubling of the downstream rate by reusing the reflective upstream modulator is demonstrated. With just two photo-detectors, a RSOA and a power splitter at the ONU, a 20/10 Gbps mode can be provided p...
10.3-Gb/s Operation over a Wide Temperature Range in 1.3-μm Quantum-dot DFB Lasers with High Modal Gain
Lasers distributed-feedback Quantum dot devices
2015/6/8
Temperature-stable 10.3-Gb/s operation was attained for 1.3-μm quantum-dot DFB lasers with high modal gain. Clearly-opened eye diagrams with the extinction ratio of over 5.2 dB were obtained from -40o...
Two-Stage Constant Modulus Algorithm Equalizer for Singularity Free Operation and Optical Performance Monitoring in Optical Coherent Receiver
Fiber optics communications Coherent communications Polarization
2015/6/5
A two-stage constant-modulus-algorithm (CMA) equalizer for polarization-demultiplexing in a polarization-division-multiplexed coherent receiver is demonstrated. The equalizer eliminates the singularit...
25 GHz Operation of Silicon Optical Modulator with Projection MOS Structure
Waveguide modulators Modulation Waveguides
2015/6/5
We report a high-speed and compact silicon optical modulator based on the free carrier plasma dispersion in a silicon rib waveguide with a MOS (metal-oxide-semiconductor) junction structure.To achieve...
Very-High Temperature (200 ℃) Operation of GaN-Based Cascade Green Light Emitting Diode for Plastic Optical Fiber Communication
Light-emitting diodes Fiber optics communications
2015/6/4
We demonstrate cascade green light-emitting-diodes, which greatly release trade-off between output-power and speed and exhibits strong modulation-speed enhancement with negligible output-power degrada...
Operation of an Integrated DWDM Comb Source in a Reflection Modulated WDM-PON System
Integrated DWDM Comb Source Reflection Modulated WDM-PON System
2015/7/20
We present a compact DWDM comb source based on an integrated optical platform. Operation of the device in a 32-channel, 50 km WDM-PON system using 1.25 Gbit/s reflective modulation is reported.
Widely Wavelength Flexible Operation of All-Optical Regeneration in RZ-OOK Signals Using Gain-Band Tunable Raman Amplifier
Widely Wavelength All-Optical Regeneration RZ-OOK Signals Tunable Raman Amplifier
2015/7/17
We demonstrate operating wavelength flexible all-optical signal regeneration with 80 nm wavelength range by simply controlling the pump wavelength of Raman amplifier and the passband of broadened sign...
Integrated 4-bit Optical Memory Elements with Single Common and Low Operation Current (55mA) Using Novel Active MMI
Integrated Optical Memory Elements Operation Current (55mA) Novel Active MMI
2015/7/17
Integrated 4-bit (355x1200 μ m 2 ) optical memory elements, using novel active multi-mode-interferometer bi-stable laser diodes, showed single, common and low operation current (55mA) with uniform cha...