METHOD OF OPERATING WAVELENGTH SWEPT SOURCE APPARATUS

• US 20160077404A1
• Filed: 11/24/2015
• Published: 03/17/2016
• Est. Priority Date: 06/19/2013
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kwon, Oh Kee, Oh, Kwang Ryong, SONG, minhyup, Lee, Chul-Wook, Shin, Jang Uk, Han, Young-Tak
• Granted Patent: US 9,348,195 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/3532 Arrangements of plural nonlinear devices for generating multi-colour light beams, e.g. arrangements of SHG, SFG, OPO devices for generating RGB light beams
• CPC Class Codes: G02F 1/354 Third or higher harmonic generation
• CPC Class Codes: G02F 1/365 in an optical waveguide structure G02F1/377, G02F1/395 take precedence
• CPC Class Codes: G02F 1/383 of the optical fibre type
• CPC Class Codes: G02F 2203/56 Frequency comb synthesizer

Abstract

A method of operating a wavelength swept source apparatus includes generating a single mode light, and generating a basic optical comb including light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light. The method further includes generating other optical combs that include the same number of light rays as that of light rays of the optical comb that has a frequency band different from that of the basic optical comb, and is distributed in a frequency band wider than that in which the basic optical comb is distributed, by modulating the light rays of the basic optical comb. The light rays of the basic optical comb and the light rays included in the other optical combs are sequentially emitted according to frequencies of the light rays of the basic optical comb and the light rays included in the other optical combs.

Claims

1. A method for operating a wavelength swept source apparatus, the method comprising:

generating single mode light;

generating a basic optical comb comprising a plurality of light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light;

generating a plurality of optical combs by modulating the plurality of light rays, wherein each of the plurality of optical combs comprises same number of light rays as the plurality of light rays, each of the same number of light rays has identical frequency differences with adjacent light rays, each of the plurality of optical combs does not overlap the basic optical comb and has a different frequency band from that of the basic optical comb, and the plurality of optical combs is distributed in a wider frequency band than that in which the basic optical comb is distributed; and

sequentially emitting the plurality of light rays and the light rays included in the plurality of optical combs according to frequencies of the plurality of light rays and the light rays included in the plurality of optical combs.

2. The method of claim 1, wherein each of the plurality of light rays is a harmonic wave of the generated single mode light.

3. The method of claim 1, wherein the generating of the plurality of optical combs comprises generating the plurality of optical combs according to a self-phase modulation characteristic of a medium.

4. The method of claim 1, wherein the emitting comprises sequentially emitting the plurality of light rays and the light rays included in the plurality of optical combs according to a group velocity dispersion characteristic of a medium.