Abstract:
PURPOSE: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier is provided to secure a wide range of input power since the method does not need a conventional Mach-Zender interferometer structure, thereby utilizing a characteristics of a conventional semiconductor laser such as a variable wavelength laser diode. CONSTITUTION: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier includes steps of etching end portions(100a,100b) of at least one of a first and a second waveguides(100,200), anti-reflection coating the end portions(100a,100b) and dividing the first and the second waveguides(100,200) by cleaving to thereby obtain a divided reflection surface and a divided anti-reflection surface, respectively. An active laser provided thereon with the first and the second waveguides(100,200) utilized in the method is made of InGaAsP and constructed into a multi-quantum well structure.
Abstract:
PURPOSE: A horizontal coupled type laser diode is provided to widen a variable wavelength range by using two active elements having different propagation constants. CONSTITUTION: A horizontal coupled type laser diode is formed by coupling horizontally the first resonator including a laser diode(100) with the second resonator including an optical amplifier(200). The optical amplifier(200) has a propagation constant which is different from the laser diode(100). The first electrode(110) and the second electrode(210) are installed in an upper end portion and a lower end portion of the laser diode(100) in order to apply current to the laser diode(100) and the optical amplifier(200), respectively. Active layers of the laser diode(100) and the optical amplifier(200) are formed by InGaAsP of a multiple quantum well structures.
Abstract:
PURPOSE: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier is provided to secure a wide range of input power since the method does not need a conventional Mach-Zender interferometer structure, thereby utilizing a characteristics of a conventional semiconductor laser such as a variable wavelength laser diode. CONSTITUTION: A method for implementing an electro-optic wavelength convertor by using a horizontal coupling of semiconductor laser and a semiconductor optical amplifier includes steps of etching end portions(100a,100b) of at least one of a first and a second waveguides(100,200), anti-reflection coating the end portions(100a,100b) and dividing the first and the second waveguides(100,200) by cleaving to thereby obtain a divided reflection surface and a divided anti-reflection surface, respectively. An active laser provided thereon with the first and the second waveguides(100,200) utilized in the method is made of InGaAsP and constructed into a multi-quantum well structure.
Abstract:
PURPOSE: A horizontal coupled type laser diode is provided to widen a variable wavelength range by using two active elements having different propagation constants. CONSTITUTION: A horizontal coupled type laser diode is formed by coupling horizontally the first resonator including a laser diode(100) with the second resonator including an optical amplifier(200). The optical amplifier(200) has a propagation constant which is different from the laser diode(100). The first electrode(110) and the second electrode(210) are installed in an upper end portion and a lower end portion of the laser diode(100) in order to apply current to the laser diode(100) and the optical amplifier(200), respectively. Active layers of the laser diode(100) and the optical amplifier(200) are formed by InGaAsP of a multiple quantum well structures.