| Patent application number | Description | Published |
|---|
| 20090252461 | BI-DIRECTIONAL OPTICAL MODULE AND A METHOD FOR ASSEMBLING THE SAME - A bi-directional optical subassembly (BOSA) is disclosed. The BOSA of the present invention provides first and second optical devices, a WDM filter and the body that is configured to secure two optical devices and to install the WDM filter. The body has a cylindrical shape with a large bore, a small bore and a joint bore connecting two bores. The WDM filter is attached to the tapered surface of the joint bore. | 10-08-2009 |
| 20090269067 | BI-DIRECTION OPTICAL MODULE INSTALLING LIGHT-EMITTING DEVICE AND LIGHT-RECEIVING DEVICE IN SIGNAL PACKAGE - A bi-directional optical module with an improved optical crosstalk between the transmitter unit and the receiver unit is disclosed. The optical module provides the LD, the PD, the WDM filter secured with the block, and the package with the co-axial shape. The block provides a slant surface, where the WDM filter is secured thereon, the bottom surface facing the PD mounted on the package, and an aperture connecting the slant surface and the bottom surface. The PD is enclosed within a space formed by the bottom surface and the primary surface, which electrically and optically isolates the PD from the LD. | 10-29-2009 |
| 20100054666 | OPTICAL SUB-ASSEMBLY WITH GLASS MEMBER PHYSICALLY CONTACT WITH EXTERNAL FIBER - An optical receptacle that enhances the optical coupling tolerance is disclosed. The optical receptacle of the invention provides, in stead of the coupling fiber installed in a conventional optical receptacle, a glass member with a diameter substantially equal to the diameter of the external fiber. The glass member, which is held by the support, provides a convex surface that abuts against the top of the external ferrule and another surface inclined with the optical axis to prevent the light reflected thereat from returning the optical device. The glass member has a substantially homogeneous distribution in the refractive index thereof; accordingly, the fluctuation in the optical coupling with the external ferrule may be reduced. | 03-04-2010 |
| 20100086262 | BI-DIRECTIONAL OPTICAL MODULE WITH PRECISELY ADJUSTED WDM FILTER - A bi-directional optical module with an arrangement to install WDM filters easily and precisely is disclosed. The optical module of the invention provides two or more optical devices, a filter unit installed with one or more WDM filters, and a coupling unit. One end of the filter unit assembles the coupling unit, while the other end thereof assembled a specific optical device. Rest optical devices are assembled with the filter unit such that their optical axes are perpendicular to the axis connecting the coupling unit with the specific optical device. The WDM filters are set on the inner of the filter bore such that the angle thereof is adjusted by rotating it as coming the edges of the WDM filter in contact with the inner wall. | 04-08-2010 |
| 20100150571 | OPTICAL MODULE WITH EASILY PRODUCED FERRULE ASSEMBLY AND METHOD FOR PRODUCING THE SAME - An optical module with a ferrule assembly able to be easily produced is disclosed. The ferrule with a tubular shape provides first to third bores. The first bore receives the optical fiber with a sheath, the second bore receives only the glass core of the fiber, which is obtained by removing the sheath, and the third bore has a diameter substantially equal to the outer diameter of the glass core of the fiber. A resin is filled in the gap between the sheath and the third bore, and in the gap between the glass core of the fiber and the second bore. The tip of the glass core is tilted with the axis and protrudes from the end surface of the ferrule. | 06-17-2010 |
| 20100183268 | BI-DIRECTIONAL OPTICAL SUBASSEMBLY WITH A WDM FILTER ATTACHED TO A CAP AND A METHOD TO ASSEMBLE THE SAME - A bi-directional optical subassembly (BOSA) with a unique arrangement to set the WDM filter is disclosed. The BOSA includes the stem and the lens cap. The stem mounts both the LD and the PD. While, the lens cap provides, in addition to the condenser lens, a structure to set the WDM filter in a top center thereof. The WDM filter is set in the lens cap with a present angle to the primary surface of the stem when the lens cap is fixed to the stem. Assembling the lens cap with the stem, the relative optical alignment between the LD, the PD and the WDM filter is performed. | 07-22-2010 |
| 20110044593 | OPTICAL MODULE WITH CERAMIC PACKAGE - An optical module with an arrangement is disclosed in which the module has the LD, the TEC, and the lens with the lens carrier also mounted on the TEC. The signal light from the LD is concentrated by the lens and reflected by the mirror each assembled with the lens carrier mounted on the TEC. The TEC is mounted on the bottom metal that covers the bottom of the ceramic package, the first layer of which is widely cut to set the TEC therein. The FPC is coupled in at least two edges of the first ceramic layer left from the cut. | 02-24-2011 |
| 20120020611 | OPTICAL DEVICE PROVIDING ALIGNMENT SUBSTRATE FOR EMITTING WHITE LIGHT - An optical device that emits white light by mixing three or four light each having a specific color is disclosed. The optical device includes the alignment substrate having a first type of grooves each setting an optical fiber therein and a second type of a groove setting all fibers collectively. Between two type of grooves, all fibers are free from grooves to facilitate the assemble of the fibers. | 01-26-2012 |
