Patent application number | Description | Published |
20110052125 | BIDIRECTIONAL OPTICAL TRANSCEIVER MODULE - A bidirectional optical transceiver module with a temperature control function is provided. The bidirectional optical transceiver module includes a package configured to have a flat bottom surface and include two windows used for optical transmission and reception; a ferrule configured to be coupled to one side of the package and allow an optical fiber to be inserted therein; an optical receiver module configured to be coupled to another side of the package in a direction perpendicular to that of the ferrule coupled to the package; a sub-optical transmitter module configured to be built in the package and include a light-emitting element and a collimating lens used to collimate light from the light-emitting element; an optical filter configured to be built in the package, transmit light from the light-emitting element to the optical fiber and reflect light received through the optical fiber to the optical receiver module; and a temperature regulator configured to be built in the package and control the sub-optical transmitter module to a preset temperature. Accordingly, it is possible to reduce the manufacturing cost of the package, effectively discharge heat, and be more endurable to external impact or vibration. | 03-03-2011 |
20120069574 | OPTICAL TRANSMISSION APPARATUS HAVING TEMPERATURE CONTROL FUNCTION - An optical transmission apparatus having a temperature control function includes: a package having a cavity; a cooler mounted in the cavity and controlling temperature; and a substrate mounted on the cooler and including a light source mounted thereon to generate light. In spite of the presence of the cooler, the apparatus can be implemented to be compact and have a simple structure. | 03-22-2012 |
20120128295 | MULTI-CHANNEL OPTICAL MODULE - The present inventive concept herein relates to multi-channel optical modules, and more particularly, to a multi-channel optical module capable of processing a plurality of signals having different optical wavelengths. The multi-channel optical module may include a stem including one or more cavities; at least one lead pin formed in one or more cavities; a plurality of optical devices formed in the one or more cavities; and a filter portion forming an optical path between the plurality of optical devices and an optical fiber by separating a plurality of optical signals according to a wavelength. According to the inventive concept, processing capacity of the optical module may be improved. Also, according to the inventive concept, electrical and optical cross talk of the optical module may be reduced. | 05-24-2012 |
20130027760 | OPTICAL PROBE USING SENSOR AND METHOD FOR CONTROLLING THE SAME - Disclosed are an optical probe using a sensor and a method for controlling the same. The optical probe includes: an optical converter to change a light path of light generated from a light source; a vibrator to convert an electrical signal into a mechanical motion; a transmission member to transmit the motion of the vibrator to the optical converter; a position sensor to sense the position of the optical converter; and a controller to adjust the position of the optical converter by controlling the vibrator based on the position sensed by the position sensor. | 01-31-2013 |
20130071126 | BIDIRECTIONAL OPTICAL TRANSMITTING AND RECEIVING DEVICE - Disclosed is a bidirectional light transmitting and receiving device which includes a first conductive plate; a second conductive plate; at least one first lead pin which penetrates the first conductive plate and includes a first conductor and a first dielectric surrounding the first conductor; at least one second lead pin which penetrates the second conductive plate and includes a second conductor and a second dielectric surrounding the second conductor; a light receiving unit which is connected with the at least one first lead pin; and a light transmitting unit which is connected with the at least one second lead pin, wherein the first conductive plate is electrically isolated from the second conductive plate. | 03-21-2013 |
20130089331 | OPTICAL LINE TERMINAL IN TIME DIVISION MULTIPLE ACCESS PASSIVE OPTICAL NETWORK AND METHOD FOR PROCESSING OPTICAL SIGNAL THEREOF - Proposed is an efficient method of configuration of a transmitter and a receiver for realizing an optical transmission/reception module apparatus including at least one transmission wavelength and two or more reception wavelengths over a time division multiple access passive optical network or an optical network using multiple transmission/reception wavelengths. Further, proposed is a method of configuration of an apparatus which enables optical alignment and assembly in a single package by using a single lens and three different WDM optical filters for a reception module capable of receiving four wavelengths. | 04-11-2013 |
20130195441 | BIDIRECTIONAL OPTICAL TRANSMITTING AND RECEIVING DEVICE - Disclosed is a bidirectional optical transmitting and receiving device which includes a bottom case; a sidewall case; an upper case; a thermoelectric cooler provided on a first portion of the bottom case; a temperature sensor, a light emitting element, and a first lens collecting light emitted from the light emitting element, the temperature sensor, the light emitting element, and the first lens formed over the thermoelectric cooler; a second lens contacting with the exterior via the sidewall case; a filter transmitting light propagated from the first lens to the second lens and reflecting light propagated from the second lens; a third lens coupled with a lower surface of the filter and collecting light reflected from the filter; a light receiving element provided on a second portion of the bottom case and receiving light propagated from the third lens to output an electric signal; a pre-amplifier provided on the second portion and amplifying the electric signal from the light emitting element; and a support formed on the second portion and supporting the filter. | 08-01-2013 |
20130279900 | PASSIVE OPTICAL NETWORK SYSTEM, METHOD FOR TRANSMITTING AND RECEIVING OPTICAL SIGNAL THEREOF, AND OPTICAL LINE TERMINAL - An optical line terminal (OLT) of a passive optical network (PON) detects a fault in an optical path configured as a single optical fiber core having an annular shape, divides the optical path into a right path and a left path having bi-directionality based on the fault position in which the fault has occurred, demultiplexes a plurality of downstream optical wavelength signals to be transmitted to at least one optical network terminal (ONT) of each group into an optical wavelength signal of the right path and an optical wavelength signal of the left path according to the position in which the fault has occurred, and outputs the same to at least one of the ONTs of each group. | 10-24-2013 |
20140138148 | FEED THROUGH - Provided is a feed through. The feed through comprises: an optical device; a housing surrounding the optical device and having a first hole; a solder coupled into the first hole and having a plurality of second holes, each smaller than the first hole; and lead frames leading from the inside of the housing to the outside through the second holes and having a more reduced line width at the inside of the second holes than the outside thereof. | 05-22-2014 |