scispace - formally typeset
Patent

Light source device

Reads0
Chats0
TLDR
A light source device has a continous wave (CW) light source for emitting first direct current (DC) light, a level converter for converting optical electric power of the first DC light into second DC light, and a mixer for mixing an optical main signal having a constant extinction ratio with the secondDC light as discussed by the authors.
Abstract
A light source device has a continous wave (CW) light source for emitting first direct current (DC) light, a level converter for converting optical electric power of the first DC light into second DC light and outputting the second DC light, and a mixer for mixing an optical main signal having a constant extinction ratio with the second DC light.

read more

Citations
More filters
Patent

Semiconductor Light Emitting Device

TL;DR: In this article, the authors present a semiconductor light emitting device, consisting of a plurality of semiconductor layers, including a first semiconductor layer having a first conductivity, an active layer interposed between the first and the second semiconductors, and a non-conductive distributed bragg reflector coupled to the plurality of layers, reflecting the light from the active layer.
Patent

Illumination device comprising a film-based lightguide

TL;DR: In this paper, a method of producing a light emitting device is disclosed, where surface relief features on a surface of a low contact area cover are adjacent to a region of a lightguide with one or more of the surface relief feature contacting the lightguide.
Patent

Display apparatus with optical cavities

TL;DR: In this paper, the authors define an array of light modulators that define a display plane, a light guide 1204 and front and rear-facing reflective surfaces, and at least 50% of the light guide's rear surface is parallel to the display plane.
Patent

Light emitting display with light mixing within a film

TL;DR: In this paper, a light emitting device consisting of an array of legs extending from a body of film with the bounding edges of the legs stacked, a first light source emitting light of a first color and a second light source emitted light of another color into the stacked edges where the light emitting region defined within the body is configured to extract light of the third color.
Patent

Display methods and apparatus

TL;DR: In this paper, a control matrix is used to control the movement of MEMs-based light modulators for forming images on a display utilizing a controller matrix to control motion of the modulators.
References
More filters
Patent

Wavelength division multiplexing optical transmission apparatus and optical repeater

TL;DR: In this article, an optical wavelength demultiplexer is used to detect the difference between the wavelength of a transmitter and a wavelength minimizing the loss in the optical-wavelength demultiper.
Patent

Control unit for optical modulators producing multiplexed optical output signal

TL;DR: In this paper, a control unit for controlling an optically modulating apparatus in an optical transmitter, including plural optical modulators producing an optical output signal consisting of a series of optical pulses for transmitting data under OTDM or WDM, is described.
Patent

Fiber optic communication terminal, fiber optic communication system, and its wavelength setting method

TL;DR: In this article, a fiber optic communication terminal composed of a light mixing part for mixing an input light signal and a light signal from own station, a detecting part for picking up a part of the output of the light mixing parts to detect its quality deterioration, and light source part in which the wavelength of output light is variable, increase of noise level or occurrence of bit error due to beat interference caused by mixing of input light signals and light signals from the own station is detected as quality deterioration in the detecting part.
Patent

Control system for external modulator

TL;DR: In this paper, a low frequency superposing means was used to stabilize the light signal from the external modulator and to prevent the extinction ratio from deteriorating by holding an optimum operation point corresponding to the operation point drift of the externally modulator without depending upon an input signal.
Patent

Signal light outputting apparatus and optical transmission system having signal light outputting apparatus

TL;DR: In this article, a signal light outputting apparatus for optical communication by wavelength multiplex transmission and an optical transmission system with the same wherein control of powers and/or wavelengths of signal lights to be transmitted can be performed with certainty and the signal lights can be transmitted and received accurately while making transmission characteristics of the signals equal to each other.