A simple laterally tapered waveguide for low-loss coupling to single-mode fibers

K. Kasaya, O. Mitomi, M. Naganuma, +2

IEEE Photonics Technology Letters

WaveguidesOptical MaterialsLow-loss CouplingEngineeringFiber Optics +15

Clear energy level shift in ultranarrow InGaAs/InP quantum well wires fabricated by reverse mesa chemical etching

Masaya Notomi, M. Naganuma, Toshio Nishida, +4

Applied Physics Letters

Wide-bandgap SemiconductorPhotonicsElectrical EngineeringOptical MaterialsMesa Wet +13

High-speed InGaAlAs/InAlAs multiple quantum well optical modulators

K. Wakita, I. Kotaka, O. Mitomi, +3

Journal of Lightwave Technology

PhotonicsQuantum ScienceQuantum PhotonicsOptical MaterialsHigh-speed Modulation +13

Chirping characteristic and frequency response of MQW optical intensity modulator

O. Mitomi, S. Nojima, I. Kotaka, +3

Journal of Lightwave Technology

Optical MaterialsEngineeringOptical Transmission SystemOptical ModulationOptical Amplifier +17

Monolithically integrated DBR lasers with simple tapered waveguide for low-loss fibre coupling

K. Kasaya, Y. Kondo, Mitsuo Okamoto, +2

Electronics Letters

PhotonicsTapered Waveguide RegionEngineeringIngaasp/inp 1.55Optical Transmission System +11

High-speed and low-driving-voltage InGaAs/InAlAs multiquantum well optical modulators

I. Kotaka, K. Wakita, Kenji Kawano, +2

Electronics Letters

Optical MaterialsEngineeringRadio FrequencyOptical ModulationOptical Modulators +15

Soliton Induced Supercontinuum Generation in Photonic Crystal Fiber

Kenji Sakamaki, Miho Nakao, M. Naganuma, +1

IEEE Journal of Selected Topics in Quantum Electronics

Photonic Crystal FiberPhotonicsEngineeringPhysicsOptical Properties +9

Gain saturation coefficients of strained-layer multiple quantum-well distributed feedback lasers

Hiroshi Yasaka, Kenichi Takahata, Norio Yamamoto, +1

IEEE Photonics Technology Letters

Sl-mqw Dfb LaserPhotonicsOptical PumpingGain Saturation CoefficientEngineering +11

Studies on necessary condition of companion robot in the RAA application

E. Ohkubo, T. Negishi, Yuji Oyamada, +2

EngineeringSocially Assistive RobotField RoboticsRobotic AgentDesirable Properties +21

Integrated external-cavity InGaAs/InP lasers using cap-annealing disordering

T. Miyazawa, H. Iwamura, M. Naganuma

IEEE Photonics Technology Letters

WaveguidesOptical MaterialsEngineeringLaser ScienceLaser Applications +20