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| Number | Title | Issue Date |
| 8346027 | Electro-optic device Provided is an electro-optic device. The electro-optic device includes an input Y-branch comprising a first input branch and a second input branch, an output Y-branch comprising a first output branch and a second output branch, a first optical modulator and a second... | 01/01/2013 |
| 8320037 | Electro-optic device An electro-optic device is provided. The electro-optic device includes a junction layer disposed between a first conductivity type semiconductor layer and a second conductivity type semiconductor layer to which a reverse vias voltage is applied. The first conductivi... | 11/27/2012 |
| 8180184 | Absorption modulator and manufacturing method thereof An absorption modulator is provided. The absorption modulator includes a substrate, an insulation layer disposed on the substrate, and a waveguide having a P-I-N diode structure on the insulation layer. Absorptance of an intrinsic region in the P-I-N diode structure... | 05/15/2012 |
| 7646942 | Silicon semiconductor based high-speed ring optical modulator Provided is a high-speed ring optical modulator based on a silicon semiconductor, having increased optical modulation speed. The high-speed ring optical modulator includes a ring optical waveguide including a portion in which the refractive index varies, that is, a ... | 01/12/2010 |
| 7373032 | Optical transceiver module Provided is an optical transceiver module of an optical transceiver, which is used for optical communications. The optical transceiver module prevents electrical crosstalk between a light source and a light receiver. Additionally, the optical transceiver module incl... | 05/13/2008 |
| 7310469 | Waveguide PIN photodiode having graded index distribution centering around optical absorption layer A waveguide PIN photodiode is provided. The waveguide PIN photodiode includes a lower light guide layer, a light absorption layer, an upper light guide layer, and a cladding layer. The lower light guide is formed on a substrate, and the light absorption layer is for... | 12/18/2007 |
| 7206487 | Waveguide photodetector Provided is a waveguide photodetector including: a first clad layer disposed on a substrate; a core layer disposed on the first clad layer and for absorbing predetermined light; a second clad layer disposed on the core layer; and at least one subsidiary layer insert... | 04/17/2007 |
