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Optical modulator with reduced size and optical transmitter including the same

A technology of optical modulator, optical signal, applied in the field of optical transmitter

Inactive Publication Date: 2012-07-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the Mach-Zehnder optical modulator includes a relatively large Y-beam splitter at each of the two ends, the Mach-Zehnder optical modulator can be relatively large

Method used

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  • Optical modulator with reduced size and optical transmitter including the same
  • Optical modulator with reduced size and optical transmitter including the same
  • Optical modulator with reduced size and optical transmitter including the same

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Embodiment Construction

[0038] In the following, exemplary embodiments of the present invention will be described more fully with reference to the accompanying drawings. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals may denote the same elements throughout.

[0039] It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present.

[0040] figure 1is a schematic diagram of an optical transmitter 1 according to an exemplary embodiment of the present invention. The optical transmitter 1 includes a light source 10 , which may be, for example, a continuous wave (CW) laser, an optical modulator driver 20 , a precoder 30 and an optical modulat...

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Abstract

The invention provides an optical modulator with reduced size and an optical transmitter including the same. The optical modulator includes a light input / output unit receiving an incident optical signal which has not been modulated, splitting the incident optical signal into a first optical signal and a second optical signal, and transmitting the first and second optical signals to a first path and a second path, respectively, of an optical waveguide. A phase shifter is positioned in at least one of the first and second paths and modulates a phase of at least one of the first and second optical signals, which have been received through the first and second paths, respectively, in response to an electrical signal. A phase-modulated signal is output. A reflective grating coupler reflects signals respectively received through the first and second paths back along the first and second paths respectively.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2010-0130323 filed on December 17, 2010, the disclosure of which is incorporated herein by reference. technical field [0003] The present application relates to an optical modulator, and more particularly, to an optical modulator having a reduced size and an optical transmitter including the same. Background technique [0004] A ring type optical modulator may be proposed to reduce the size of the optical modulator. However, ring-type optical modulators are adversely affected by temperature. [0005] Mach-Zehnder optical modulators can be more stable than ring-type optical modulators. However, since the Mach-Zehnder optical modulator includes a relatively large Y-beam splitter at each of the two ends, the Mach-Zehnder optical modulator can be relatively large. Contents of the invention [0006] According to some exemplary embodiments of the pr...

Claims

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Application Information

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IPC IPC(8): H04B10/155G02B6/12G02F1/01
CPCG02B6/305G02B6/124G02F2201/307G02F1/225G02B6/30G02F1/00G02B6/34H04B10/505H04B10/532H04B10/548
Inventor 池晧哲申东宰李侊炫表正炯河镜虎
Owner SAMSUNG ELECTRONICS CO LTD