WAVELENGTH DIVISION MULTIPLEXING MODULE

• US 20200132274A1
• Filed: 03/11/2019
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: Elite Advanced Laser Corporation
• Original Assignee: Elite Advanced Laser Corporation
• Inventors: Cheng, Chu-Liang, Wang, Chi-Hua
• Granted Patent: US 10,615,883 B1
• Time in Patent Office: Days
• CPC Class Codes: F21V 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• CPC Class Codes: G02B 6/29367 Zigzag path within a transparent optical block, e.g. filter deposited on an etalon, glass plate, wedge acting as a stable spacer
• CPC Class Codes: G02B 6/4214 the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device G02B6/4246 takes precedence
• CPC Class Codes: G02B 6/4215 the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers G02B6/4246 takes precedence
• CPC Class Codes: H04B 10/506 Multiwavelength transmitters
• CPC Class Codes: H04B 10/67 Optical arrangements in the receiver
• CPC Class Codes: H04J 14/02 Wavelength-division multiplex systems

Abstract

A wavelength division multiplexing module adapted to combine a plurality of light beams to a mixed light beam is provided. The wavelength division multiplexing module includes a housing, a plurality of light emitting elements, an optical division element, and a plurality of reflectors. The light emitting elements are adapted to provide light beams. The optical division element is disposed on a transmission path of the light beams. The reflectors are disposed on the transmission path of the light beams. The optical division element has a reflection region and a light transmission region on one side opposite to the light emitting elements. The reflection region is adapted to reflect a portion of the light beams, and the light transmission region is adapted to allow the mixed light beam to pass through. At least two of the light emitting elements are arranged in an extending direction of the housing.

Claims

1. A wavelength division multiplexing module, adapted to combine a plurality of light beams to a mixed light beam, the wavelength division multiplexing module comprising:

a housing;

a plurality of light emitting elements, disposed in the housing, adapted to provide the light beams;

an optical division element, disposed on the housing and in a transmission path of the light beams; and

a plurality of reflectors, disposed on the housing and in the transmission path of the light beams, located between the light emitting elements and the optical division element, wherein the optical division element has a reflection region and a light transmission region on one side opposite to the light emitting elements, the reflection region is adapted to reflect a portion of the light beams, the light transmission region is adapted to allow the mixed light beam to pass through, and at least two of the light emitting elements are arranged in an extending direction of the housing, and

wherein a light emitting direction of a portion of the light emitting elements is parallel to the extending direction of the housing, and a number of the other portion of the light emitting elements is identical to a number of the reflectors.

2. The wavelength division multiplexing module as claimed in claim 1, wherein wavelengths of the light beams are different.

3. The wavelength division multiplexing module as claimed in claim 1, wherein the light beams and the mixed light beam are transmitted on a same plane.

4. The wavelength division multiplexing module as claimed in claim 1, wherein the light emitting elements are fixed to the housing through soldering.

5. The wavelength division multiplexing module as claimed in claim 1, wherein the light emitting elements are arranged in the extending direction of the housing, and a number of the light emitting elements is identical to a number of the reflectors.

7. The wavelength division multiplexing module as claimed in claim 1, wherein an included angle between an extending direction of the reflectors and the extending direction of the housing is 45 degrees.

8. The wavelength division multiplexing module as claimed in claim 1, wherein the optical division element comprises a plurality of selective reflection elements disposed on one side opposite to the reflection region, the selective reflection elements are adapted to allow light ray with specific wavelengths to pass through, and specific wavelengths corresponding to the selective reflection elements individually correspond to wavelengths of the light beams.

9. The wavelength division multiplexing module as claimed in claim 1, further comprising:

a connection element, disposed on the housing and in a transmission path of the mixed light beam.

10. The wavelength division multiplexing module as claimed in claim 1, wherein the transmission path of the light beams adjacent to the optical division element and a transmission path of the mixed light beam adjacent to the optical division element are parallel to each other.

6. (canceled)

11. A wavelength division multiplexing module, adapted to convert a mixed light beam to a plurality of light beams, the wavelength division multiplexing module comprising:

a housing;

a plurality of light receiving elements, disposed in the housing, adapted to receive the light beams;

an optical division element, disposed on the housing and in a transmission path of the light beams; and

a plurality of reflectors, disposed on the housing and in the transmission path of the light beams, located between the light receiving elements and the optical division element, wherein the optical division element has a reflection region and a light transmission region on one side opposite to the light receiving elements, the reflection region is adapted to reflect a portion of the light beams, the light transmission region is adapted to allow the mixed light beam to pass through, and at least two of the light receiving elements are arranged in an extending direction of the housing, and

wherein an optical axis direction of a portion of the light receiving elements is parallel to the extending direction of the housing, and a number of the other portion of the light receiving elements is identical to a number of the reflectors.

12. The wavelength division multiplexing module as claimed in claim 11, wherein wavelengths of the light beams are different.

13. The wavelength division multiplexing module as claimed in claim 11, wherein the light beams and the mixed light beam are transmitted on a same plane.

14. The wavelength division multiplexing module as claimed in claim 11, wherein the light receiving elements are fixed to the housing through soldering.

15. The wavelength division multiplexing module as claimed in claim 11, wherein the light receiving elements are arranged in the extending direction of the housing, and a number of the light receiving elements is identical to a number of the reflectors.

17. The wavelength division multiplexing module as claimed in claim 11, wherein an included angle between an extending direction of the reflectors and the extending direction of the housing is 45 degrees.

18. The wavelength division multiplexing module as claimed in claim 11, wherein the optical division element comprises a plurality of selective reflection elements disposed on one side opposite to the reflection region, the selective reflection elements are adapted to allow light ray with specific wavelengths to pass through, and specific wavelengths corresponding to the selective reflection elements individually correspond to wavelengths of the light beams.

19. The wavelength division multiplexing module as claimed in claim 11, further comprising:

a connection element, disposed on the housing and in a transmission path of the mixed light beam.

20. The wavelength division multiplexing module as claimed in claim 11, wherein the transmission path of the light beams adjacent to the optical division element and a transmission path of the mixed light beam adjacent to the optical division element are parallel to each other.

16. (canceled)