Abstract:
PURPOSE: An element for processing an optical signal using a saturation absorber and an optical amplifier is provided to connect a saturation absorber and an optical amplifier in serial, and to make transparent output light strength outputted from the saturation absorber bigger than saturation input light strength of the optical amplifier, thereby removing noise and improving output light strength. CONSTITUTION: A passing power of a saturation absorber(100) is more than an absorption power if an incident light more than a transparent input light strength is injected, and the absorption power of the saturation absorber(100) is more than the passing power if an incident light less than the transparent input light strength is injected. An optical amplifier(110) is connected with the saturation absorber(100) in serial, and shows a saturation phenomenon at more than saturation input light strength. A transparent output light strength outputted when the transparent input light strength is inputted to the saturation absorber(100) is more than the saturation input light strength.
Abstract:
레이저 소자를 제공한다. 이 레이저 소자에 따르면, 기판 상에 배치된 1×2 분배기의 스템 코어에 활성층이 연결되고, 1×2 분배기의 제1 가지 코어에 제1 회절 격자가 커플 되고, 1×2 분배기의 제2 가지 코어에 제2 회절 격자가 커플 된다. 활성층-마이크로 히터가 활성층에 열을 공급할 수 있으며, 제1 마이크로 히터 및 제2 마이크로 히터가 제1 회절 격자 및 제2 회절 격자에 각각 열을 공급하여 브라그 파장을 변화시킬 수 있다.
Abstract:
본 발명은 생산성을 향상시킬 수 있는 테라헤르츠파 발생/검출기 및 그의 제조방법을 개시한다. 그 발생/검출기는, 기판; 상기 기판 상의 전면에 형성된 포토 컨덕티브 층; 상기 포토 컨덕티브 층 상에 형성되고, 소정 간극을 갖고 서로 이격되는 제 1 전극과 제 2 전극; 및 상기 제 1 전극과 상기 제 2 전극 상에서 형성되고, 상기 제 1 전극과 상기 제 2 전극사이의 상기 간극 내부를 매립시키는 렌즈를 포함한다. 렌즈, 테라헤르츠(THz), 포토 컨덕티브(photo-conductive), 안테나(antenna)
Abstract:
PURPOSE: A device for generating/detecting tera Hz wave and a manufacturing method thereof are provided to lower costs for parts using an inexpensive plastic lens. CONSTITUTION: An etch stopper layer(22) and a photo conductive layer(20) are formed on a substrate(10) with a first opening(12). First and second antenna electrodes(32,34) are formed on the photo conductive layer. A lens(40) is buried in the gap between the first and second antenna electrodes. The lens is bonded with an exposed surface of the photo conductive layer and surfaces of the first and second antenna electrodes. The lens is strongly bonded by a petrochemistrical adhesive.
Abstract:
PURPOSE: By reducing the dependability of width to the input waveguide the optical device obtains the plane penetration characteristic of being stable. CONSTITUTION: The multiplexer/inverse multiplexer(130) especially disunites the optical signals of the inputted different channel in the first port(142) wavelength. The multiplexer/inverse multiplexer offers the optical signals separating as described above to the second port(144). The MMI(120) is connected to the first port of the multiplexer/inverse multiplexer.
Abstract:
A wavelength selection switch is provided to perform mass production and low cost with high reliability. A wavelength selection switch includes an optical demultiplexing part(110), an optical deflection part, and an optical multiplexing part(120). The optical demultiplexing part divides input optical signals into wavelength corresponding to each channel. The optical demultiplexing part selects and outputs the optical signal divided from the input optical signals about each channel or an optical signal inputted through an additional port. The optical deflection part individually deflects the optical signal of each channel received from the optical demultiplexing part according to current supply or voltage supply. The optical multiplexing part outputs the optical signal of each channel to a specific output port according to deflection of the optical deflection part.
Abstract:
A polarization insensitivity slab waveguide is provided to increase the reliability and performance of optical device by making a waveguide insensitive to material for the waveguide and a structure variable. In a polarization insensitivity slab waveguide, a light is projected from a waveguide area is reflected or diffracted at a diffraction grating and it is compensated. The waveguide area is composed of a first bottom cladding layer, a first core, and a top cladding layer. A polarized light compensation region comprises the bottom-clad layer, the first core layer, the top clad layer, and the second core layer.
Abstract:
A self oscillating laser diode is provided to develop a stable ultra short pulse laser by injecting an RF, and to develop an active ultra short pulse laser with a low cost by using a sub-harmonic RF locking structure. A self oscillating laser diode comprises a DFB(distributed feedback) sector(100), a gain sector(200), a phase adjusting sector(300), and an external RF inputting part(500). The DFB sector performs a role of a reflector. The gain sector is connected with the DFB sector, and an as-cleaved facet is formed in an end of the gain sector. The phase adjusting sector positioned between the DFB sector and the gain sector. The external RF inputting part injects an external RF signal to at least one sector of the DFB sector and the gain sector. The external RF inputting part is embodied by an impedance-matched module.
Abstract:
본 발명은 광증폭기, 빔 조종기, 및 로렌드 원 형태를 갖는 오목 회절 격자를 단일 기판에 집적시켜 전기적으로 파장을 가변시킬 수 있는 파장 가변 광원 소자를 제공한다. 본 발명은 빔 조종기 내부의 두 개의 전극에 전기 신호를 인가하여 빔 경로를 조종하고, 조종된 빔의 경로는 회절 격자의 입사각을 변경시켜 발진 파장이 가변됨을 특징으로 한다. 본 발명은 전기적으로 파장 가변을 시키기 때문에 구조적으로 안정적이며, 파장 가변 속도도 빠른 장점을 가진다.
Abstract:
Provided is an apparatus and method for simultaneous optical wavelength conversion and optical clock signal extraction using semiconductor optical amplifiers (SOAs). The apparatus includes: a wavelength converter receiving a pump beam having input information and a probe beam having a different wavelength from the pump beam, and outputting the pump beam with an overshoot shifted to a red wavelength and an undershoot shifted to a blue wavelength due to non-linear characteristics and self-phase modulation of semiconductor optical amplifiers (SOAs) and the probe beam delivered the input information from the pump beam; an optical divider dividing output paths of the probe beam to which the input information has been delivered and the pump beam having the overshoot and the undershoot; a converted-wavelength extractor filtering the probe beam received from the optical divider; and a clock data regenerator obtaining a pseudo return-to-zero (PRZ) signal from the pump beam received from the optical divider and extracting a clock signal from the PRZ signal. The apparatus and method can simultaneously perform wavelength conversion and optical clock signal extraction on an NRZ signal using an optical method, without converting the NRZ signal into an electrical signal.