CN-121995588-A - Optical chip and optical module

CN121995588ACN 121995588 ACN121995588 ACN 121995588ACN-121995588-A

Abstract

In the optical chip and the optical module provided by the disclosure, the optical chip comprises a first-stage combiner array, an nth-stage combiner array, a first-stage modulator array and an nth-1-stage modulator array. The first stage combiner array is used for combining two-by-one 2 n paths of incident light sources coupled into the optical chip. The nth-stage combiner array is used for combining light emitted by every two combiners in the previous-stage combiner array, and combining the incident light sources into one light source, so that the light power can be conveniently redistributed and adjusted. The light beams output by the nth stage combiner array are respectively coupled into two waveguide arms of the modulator. The optical power of two paths of output light of the first-stage modulator array is dynamically adjusted by adjusting the phase difference between the two waveguide arms. The modulator in the n-1 level modulator array is arranged on the output branch of the modulator in the upper level modulator array to divide 2 n paths of internal adjusting light sources. Then 2 n internal adjustment light sources are dynamically adjusted relative to 2 n incident light sources.

Inventors

SUN MIN
WANG HAISHAN
HUANG WEIPING
ZHAO JIA
JIANG YUNPENG
LI YANG

Assignees

青岛海信宽带多媒体技术有限公司
山东大学

Dates

Publication Date: 20260508
Application Date: 20260214

Claims (10)

1. An optical chip, comprising: The first-stage combiner array is used for combining the light sources coupled to the inside of the optical chip in pairs, wherein the light sources coupled to the inside of the optical chip comprise 2 n paths of incident light sources, and the first-stage combiner array comprises 2 n-1 combiners, wherein n is a positive integer more than or equal to 1; The n-th-stage combiner array is used for combining the light emitted by every two combiners in the previous-stage combiner array so as to combine the 2 n paths of incident light sources into a beam of light source and split the beam, wherein the n-th-stage combiner array comprises 1 combiner; The first-stage modulator array is arranged on one side of the nth-stage combiner array, the first-stage splitter array comprises 1 modulator, the modulator comprises two waveguide arms, and light beams output by the nth-stage combiner array are respectively coupled into the two waveguide arms; The n-th level modulator array is arranged on one side of the upper level modulator array, and the modulators in the n-1 level modulator array are arranged on the output branch of the modulators in the upper level modulator array to divide 2 n paths of internal adjusting light sources, wherein the light power of the 2 n paths of internal adjusting light sources is adjusted relative to the light power of the 2 n paths of incident light sources.
2. The optical chip of claim 1, wherein the 2 n -way internal trim light source comprises a first-way internal trim light source; The optical chip includes: the first post-stage modulator comprises two waveguide arms, and the optical power of two paths of light output by the first post-stage modulator is adjusted by adjusting the phase difference between the two waveguide arms; The second post-stage modulator is arranged on an output branch of the first post-stage modulator and is used for dividing the first light output of the first post-stage modulator into a first path of light source to be modulated and a second path of light source to be modulated; The third post-stage modulator is arranged on the other output branch of the first post-stage modulator and is used for dividing the other light output of the first post-stage modulator into a third path of light source to be modulated and a fourth path of light source to be modulated, and the third post-stage modulator comprises two waveguide arms, and the optical power of the third path of light source to be modulated and the optical power of the fourth path of light source to be modulated are adjusted by adjusting the phase difference between the two waveguide arms.
3. The optical chip of claim 2, wherein a first beam splitter is disposed on an optical path of the first post-modulator, and the first beam splitter is disposed on a transmission optical path of the first internal adjusting light source to split the first internal adjusting light source into two beams of light, and the two beams of light are respectively coupled into two waveguide arms of the first post-modulator; A second beam splitter is arranged on the light-emitting light path of the first rear-stage modulator, and the second beam splitter is used for dividing the light emitted by the first rear-stage modulator into two beams of light to be respectively transmitted to the second rear-stage modulator and the third rear-stage modulator; A third beam splitter is arranged on the light incident light path of the second rear-stage modulator and is used for splitting a beam splitting light path of the second beam splitter into two beams of light, and the two beams of light after beam splitting are respectively coupled into two waveguide arms of the second rear-stage modulator; A fourth beam splitter is arranged on the light-emitting light path of the second rear-stage modulator, and the fourth beam splitter is used for dividing the light-emitting light of the second rear-stage modulator into the first path of light source to be modulated and the second path of light source to be modulated; A fifth beam splitter is arranged on the light incident light path of the third rear-stage modulator and is used for splitting the other beam splitting light path of the second beam splitter into two beams of light, and the two beams of light after beam splitting are respectively coupled into two waveguide arms of the third rear-stage modulator; A sixth beam splitter is arranged on the light-emitting light path of the third post-stage modulator, and the sixth beam splitter is used for dividing the light-emitting light of the third post-stage modulator into the third path of light source to be modulated and the fourth path of light source to be modulated.
4. The optical chip of claim 1, wherein the light-emitting end of the first-stage modulator array is provided with a first splitter, the first splitter comprises two input ports and two output ports, and the light-emitting ends of the two waveguide arms in the first-stage modulator array are respectively coupled to the two input ports of the first splitter and are split after being combined in the first splitter.
5. The optical chip of claim 1, wherein the combiner in the nth stage combiner array comprises two input ports and two output ports.
6. An optical chip, comprising: the first combiner is arranged on a transmission light path of a first path of incident light source and a second path of incident light source which are coupled to the inside of the optical chip, and is used for combining the first path of incident light source and the second path of incident light source into a first light beam; the second combiner is arranged on a transmission light path of a third path of incident light source and a fourth path of incident light source which are coupled to the inside of the optical chip, and is used for combining the third path of incident light source and the fourth path of incident light source into a second light beam; The third combiner is arranged on the transmission optical path of the first light beam and the second light beam, and is used for combining the first light beam and the second light beam and then re-splitting the combined first light beam and the combined second light beam; The first modulator is arranged at the light emitting end of the third combiner and comprises two waveguide arms, and two light emitting beams of the third combiner are respectively coupled into the two waveguide arms; the light output end of the first modulator is provided with a first splitter, the light output ends of two waveguide arms of the first modulator are respectively coupled to two input ports of the first splitter, and the light output ends of the two waveguide arms of the first modulator are split after being combined in the first splitter; the second modulator is arranged on a beam splitting branch of the first splitter and comprises two waveguide arms, and the two waveguide arms respectively output a first path of internal adjusting light source and a second path of internal adjusting light source; The third modulator is arranged on the other beam splitting branch of the first splitter and comprises two waveguide arms, the two waveguide arms respectively output a third internal adjusting light source and a fourth internal adjusting light source, and the optical power of the third internal adjusting light source and the optical power of the fourth internal adjusting light source can be adjusted by adjusting the phase difference between the two waveguide arms.
7. The optical chip of claim 6, wherein the optical chip comprises: the first post-stage modulator comprises two waveguide arms, and the optical power of two paths of light output by the first post-stage modulator is adjusted by adjusting the phase difference between the two waveguide arms; The second post-stage modulator is arranged on an output branch of the first post-stage modulator and is used for dividing the first light output of the first post-stage modulator into a first path of light source to be modulated and a second path of light source to be modulated; The third post-stage modulator is arranged on the other output branch of the first post-stage modulator and is used for dividing the other light output of the first post-stage modulator into a third path of light source to be modulated and a fourth path of light source to be modulated, and the third post-stage modulator comprises two waveguide arms, and the optical power of the third path of light source to be modulated and the optical power of the fourth path of light source to be modulated are adjusted by adjusting the phase difference between the two waveguide arms.
8. The optical chip of claim 7, wherein a first beam splitter is disposed on an optical path of the first post-modulator, and the first beam splitter is disposed on a transmission optical path of the first internal adjusting light source to split the first internal adjusting light source into two beams of light, and the two beams of light are respectively coupled into two waveguide arms of the first post-modulator; A second beam splitter is arranged on the light-emitting light path of the first rear-stage modulator, and the second beam splitter is used for dividing the light emitted by the first rear-stage modulator into two beams of light to be respectively transmitted to the second rear-stage modulator and the third rear-stage modulator; A third beam splitter is arranged on the light incident light path of the second rear-stage modulator and is used for splitting a beam splitting light path of the second beam splitter into two beams of light, and the two beams of light after beam splitting are respectively coupled into two waveguide arms of the second rear-stage modulator; A fourth beam splitter is arranged on the light-emitting light path of the second rear-stage modulator, and the fourth beam splitter is used for dividing the light-emitting light of the second rear-stage modulator into the first path of light source to be modulated and the second path of light source to be modulated; A fifth beam splitter is arranged on the light incident light path of the third rear-stage modulator and is used for splitting the other beam splitting light path of the second beam splitter into two beams of light, and the two beams of light after beam splitting are respectively coupled into two waveguide arms of the third rear-stage modulator; A sixth beam splitter is arranged on the light-emitting light path of the third post-stage modulator, and the sixth beam splitter is used for dividing the light-emitting light of the third post-stage modulator into the third path of light source to be modulated and the fourth path of light source to be modulated.
9. The optical chip of claim 6, wherein the first light source to be modulated has a first signal modulator on an outgoing light path, the second light source to be modulated has a second signal modulator on an outgoing light path, the third light source to be modulated has a third signal modulator on an outgoing light path, and the fourth light source to be modulated has a fourth signal modulator on an outgoing light path.
10. An optical module, comprising: an optical chip comprising an optical chip according to any one of claims 1 to 5, or an optical chip according to any one of claims 6 to 9; The first optical fiber array is coupled with the light inlet end of the optical chip; And the second optical fiber array is coupled with the light emitting end of the optical chip.

Description

Optical chip and optical module Technical Field The disclosure relates to the technical field of optical communication, and in particular relates to an optical chip and an optical module. Background With the development of new business and application modes such as cloud computing, mobile internet, video and the like, the progress of optical communication technology is becoming more important. In the development of optical communication technology, the optical module is required to be continuously improved in data transmission rate as one of key devices in optical communication equipment, so that photoelectric signal conversion can be realized. Disclosure of Invention In some embodiments, an optical chip and an optical module are provided to provide an optical chip optical power adjustment scheme. In some embodiments, there is provided an optical chip comprising: The first-stage combiner array is used for combining the light sources coupled to the inside of the optical chip in pairs, wherein the light sources coupled to the inside of the optical chip comprise 2 n paths of incident light sources, and the first-stage combiner array comprises 2 n-1 combiners, wherein n is a positive integer more than or equal to 1; The n-th-stage combiner array is used for combining the light emitted by every two combiners in the previous-stage combiner array so as to combine the 2 n paths of incident light sources into a beam of light source and split the beam, wherein the n-th-stage combiner array comprises 1 combiner; The first-stage modulator array is arranged on one side of the nth-stage combiner array, the first-stage splitter array comprises 1 modulator, the modulator comprises two waveguide arms, and light beams output by the nth-stage combiner array are respectively coupled into the two waveguide arms; The n-th level modulator array is arranged on one side of the upper level modulator array, and the modulators in the n-1 level modulator array are arranged on the output branch of the modulators in the upper level modulator array to divide 2 n paths of internal adjusting light sources, wherein the light power of the 2 n paths of internal adjusting light sources is adjusted relative to the light power of the 2 n paths of incident light sources. One of the above technical solutions has the advantage or beneficial effect that the optical chip comprises a first-stage combiner array, an nth-stage combiner array, a first-stage modulator array and an nth-1-stage modulator array. The first stage combiner array is used for combining two-by-one 2 n paths of incident light sources coupled into the optical chip. The nth stage combiner array is used for combining the light emitted by every two combiners in the previous stage combiner array so as to combine the incident light sources into a beam of light source and split the beam. The incident light sources are combined into a beam of light sources, and the light field energy of the incident light sources is further overlapped and combined into a beam of large light sources, so that the light power is conveniently redistributed and adjusted. The first-stage modulator array is arranged on one side of the nth-stage combiner array, the first-stage splitter array comprises 1 modulator, the modulator comprises two waveguide arms, and light beams output by the nth-stage combiner array are respectively coupled into the two waveguide arms. The output light of the modulator is formed by interference of two waveguide arms, the output light power and the phase difference of the two waveguide arms are in a functional relation, and when the phase difference of the two waveguide arms changes, the output light power of the two waveguide arms is dynamically adjusted, so that the dynamic adjustment of the output light power of the two waveguide arms is realized. Therefore, the optical power of the two paths of output light of the first-stage modulator array is dynamically adjusted by adjusting the phase difference between the two waveguide arms. The n-1 level modulator array is arranged on one side of the upper level modulator array, and the modulators in the n-1 level modulator array are arranged on the output branch of the modulators in the upper level modulator array so as to divide 2 n paths of internal adjusting light sources. The optical power of the 2 n -path internal adjusting light source is dynamically adjusted by adjusting the phase difference of two waveguide arms of the modulator in the n-1-level modulator array, so that the optical power of the emergent light is dynamically adjusted, and the relative position of the 2 n -path internal adjusting light source and the 2 n -path incident light source are dynamically adjusted. In some embodiments, the 2 n -way internal-trim light source includes a first-way internal-trim light source; The optical chip includes: the first post-stage modulator comprises two waveguide arms, and the optical power of two paths of light output by the first post-st