CN108594370B - Parallel multi-channel transmission optical assembly with backlight monitoring - Google Patents

Parallel multi-channel transmission optical assembly with backlight monitoring Download PDF

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Publication number
CN108594370B
CN108594370B CN201810254212.0A CN201810254212A CN108594370B CN 108594370 B CN108594370 B CN 108594370B CN 201810254212 A CN201810254212 A CN 201810254212A CN 108594370 B CN108594370 B CN 108594370B
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CN
China
Prior art keywords
array
backlight monitoring
lens array
parallel
degree interface
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CN201810254212.0A
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Chinese (zh)
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CN108594370A (en
Inventor
周纪承
张利
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武汉华工正源光子技术有限公司
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Priority to CN201810254212.0A priority Critical patent/CN108594370B/en
Publication of CN108594370A publication Critical patent/CN108594370A/en
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Publication of CN108594370B publication Critical patent/CN108594370B/en

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4286Optical modules with optical power monitoring
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4296Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25Arrangements specific to fibre transmission

Abstract

The invention provides a parallel multi-channel transmission optical component with backlight monitoring, which comprises a lens base body, an incident collimating lens array, a backlight monitoring collimating lens array, an emergent focusing lens array, a VCSEL chip array and a backlight monitoring chip array, wherein the incident collimating lens array is arranged on the lens base body; the incident collimating lens array and the backlight monitoring collimating lens array are arranged on the same side of the lens base body, and the emergent focusing lens array is arranged on the other side of the lens base body; the lens base body is provided with a first 45-degree interface and a second 45-degree interface which are parallel to each other, and the lens base body is also provided with a third 45-degree interface and a fourth 45-degree interface which are perpendicular to each other. The invention can realize the backlight monitoring of parallel multi-channel transmission, does not need to additionally add a lens while realizing the backlight monitoring function, fully utilizes the parallel light path channel of the array lens, and is beneficial to realizing both an active coupling packaging scheme and a passive coupling packaging scheme.

Description

Parallel multi-channel transmission optical assembly with backlight monitoring

Technical Field

The invention relates to the field of optical communication, in particular to a parallel multi-channel transmission optical component with backlight monitoring.

Background

With the rapid growth of services such as internet, cloud computing, big data and the like, the large-scale construction of a data center with large capacity and high bandwidth is promoted. In the field of optical communication, a VCSEL (vertical cavity surface emitting laser) is used as a light source to realize high-bandwidth transmission, and parallel multi-channel transmission is adopted to realize high capacity.

In practical applications, the VCSEL laser is in a non-hermetic environment, and the performance of the laser is susceptible to environmental changes. In particular, the threshold current and the output optical power vary with temperature and age with long-term operation. To ensure that the laser maintains a constant output optical power during use, the output optical power should be monitored. In the existing application, especially in the application with more channels, the output light power cannot be monitored at any time to feed back and adjust the working current of the laser in real time due to technical reasons, and the problem that the output light power of the laser is changed cannot be solved. In addition, in the existing application, all channels of the array lens are not used completely due to technical problems, so that some waste is caused.

Therefore, it is imperative to design a transceiver optical assembly with backlight monitoring and parallel multi-channel transmission to overcome the above problems.

Disclosure of Invention

The invention aims to provide a parallel multi-channel transmission optical assembly for backlight monitoring, and aims to solve the problems that the conventional optical assembly cannot realize backlight monitoring of more channels and all the channels of the conventional array lens are not used completely.

The invention is realized by the following steps:

the invention provides a parallel multi-channel transmission optical component with backlight monitoring, which comprises a lens base body, an incident collimating lens array, a backlight monitoring collimating lens array, an emergent focusing lens array, a VCSEL chip array and a backlight monitoring chip array, wherein the incident collimating lens array is arranged on the lens base body; the incident collimating lens array and the backlight monitoring collimating lens array are arranged on the same side of the lens base body, and the emergent focusing lens array is arranged on the other side of the lens base body; the lens substrate is provided with a first 45-degree interface and a second 45-degree interface which are parallel to each other, and the lens substrate is also provided with a third 45-degree interface and a fourth 45-degree interface which are perpendicular to each other;

light emitted from the VCSEL chip array is emitted to the first 45-degree interface through the incident collimating lens array, one part of light is reflected to the emergent focusing lens array through the first 45-degree interface and emitted, the other part of light enters the second 45-degree interface through the first 45-degree interface and is emitted, the light is reflected through the third 45-degree interface and the fourth 45-degree interface and then reaches the backlight monitoring collimating lens array, and the backlight monitoring collimating lens array converges the light on the backlight monitoring chip array.

Further, the same array lens is adopted by the incident collimating lens array and the backlight monitoring collimating lens array.

Further, the array lens has a plurality of rows of array channels.

Further, light incident to the first 45 ° interface is parallel to light exiting from the second 45 ° interface.

Further, air is between the first 45 ° interface and the second 45 ° interface.

Further, the lens base includes a first lens base and a second lens base, the first 45 ° interface and the second 45 ° interface are disposed on the first lens base, and the third 45 ° interface and the fourth 45 ° interface are disposed on the second lens base.

Further, a reflective film is plated or a reflective membrane is attached on the third 45-degree interface and the fourth 45-degree interface.

The receiving end focusing lens array and the incident collimating lens array are arranged on the same side of the lens base body, the receiving chip array receives light from an optical fiber end, the light at the optical fiber end is transmitted as parallel light after passing through the optical fiber end collimating lens, and after being reflected by the first 45-degree interface, the light is converged on the receiving chip array by the receiving end focusing lens array.

Compared with the prior art, the invention has the following beneficial effects:

the parallel multichannel transmission optical assembly with the backlight monitoring function realizes the backlight monitoring of the parallel multichannel transmission through a novel optical path design, the incident collimating lens array and the backlight monitoring collimating lens array can adopt the same array lens, the lens does not need to be additionally arranged while the backlight monitoring function is realized, the parallel optical path channel of the array lens is fully utilized, and a backlight monitoring scheme is provided for high-speed parallel transmission products such as COB (Chip on board), AOC (Active optical cable) and the like, so that the Active coupling packaging scheme is favorably realized, and the passive coupling packaging scheme is favorably realized.

Drawings

Fig. 1 is a front view of a parallel multi-channel transmission optical assembly with backlight monitoring provided in embodiment 1 of the present invention;

fig. 2 is a side view of a parallel multi-channel transmission optical assembly with backlight monitoring according to embodiment 1 of the present invention;

fig. 3 is a front view of a parallel multi-channel transmission optical assembly with backlight monitoring provided in embodiment 2 of the present invention;

fig. 4 is a side view of a parallel multi-channel transmission optical assembly with backlight monitoring according to embodiment 2 of the present invention.

Description of reference numerals: the device comprises a lens base body 1, a first 45-degree interface 2, a second 45-degree interface 3, a third 45-degree interface 4, a fourth 45-degree interface 5, an incident collimating lens array 6, an emergent focusing lens array 7, a backlight monitoring collimating lens array 8, a receiving end focusing lens array 9, a VCSEL chip array 10, a backlight monitoring chip array 11 and a receiving chip array 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

as shown in fig. 1 and fig. 2, embodiment 1 of the present invention provides a parallel multi-channel transmission optical assembly with backlight monitoring, which includes a lens base 1, an incident collimating lens array 6, a backlight monitoring collimating lens array 8, an exit focusing lens array 7, a receiving end focusing lens array 9, a VCSEL chip array 10, a backlight monitoring chip array 11, and a receiving chip array 12, where the VCSEL chip array 10 is aligned in coupling with the incident collimating lens array 6, the backlight monitoring chip array 11 is aligned in coupling with the backlight monitoring collimating lens array 8, the receiving chip array 12 is aligned in coupling with the receiving end focusing lens array 9, and each chip of each chip array corresponds to each lens of the corresponding lens array one by one. In this embodiment, the incident collimating lens array 6 and the backlight monitoring collimating lens array 8 use the same array lens, the array lens is a single row of 12 channels, the VCSEL chip array 10 is 1 × 4, the backlight monitoring chip array 11 is 1 × 4, the receiving chip array 12 is 1 × 4, and the array lens serves as both the incident collimating lens array 6 and the backlight monitoring collimating lens array 8, thereby fully utilizing parallel light path channels of the array lens and facilitating coupling.

The incident collimating lens array 6, the backlight monitoring collimating lens array 8 and the receiving end focusing lens array 9 are arranged on the same side of the lens substrate 1, and the emergent focusing lens array 7 is arranged on the other side of the lens substrate 1 and forms an angle of 90 degrees with the incident collimating lens array 6; the lens base body 1 is provided with a first 45-degree interface 2 and a second 45-degree interface 3 which are parallel to each other, air is arranged between the first 45-degree interface 2 and the second 45-degree interface 3, the structure is simple to manufacture, and the lens base body 1 is further provided with a third 45-degree interface 4 and a fourth 45-degree interface 5 which are perpendicular to each other. The light emitted from the VCSEL chip array 10 is incident on the first 45-degree interface 2 through the incident collimating lens array 6, a part of the light is reflected to the emergent focusing lens array 7 through the first 45-degree interface 2 to be converged, and is coupled into an optical fiber, and the other part of light passes through the first 45-degree interface 2, enters the second 45-degree interface 3 through air refraction and is emitted out, so that the light incident to the first 45-degree interface 2 is ensured to be parallel to the light emitted from the second 45-degree interface 3, the light path is simpler, the light reaches the backlight monitoring collimating lens array 8 after being reflected by the third 45-degree interface 4 and the fourth 45-degree interface 5, the light emitted from the incident collimating lens array 6 is parallel to the light reaching the backlight monitoring collimating lens array 8, the backlight monitoring collimating lens array 8 converges light onto the backlight monitoring chip array 11. The receiving chip array 12 receives light from the optical fiber end, the light at the optical fiber end is transmitted as parallel light after passing through the optical fiber end collimating lens, and is converged on the receiving chip array 12 by the receiving end focusing lens array 9 after being reflected by the first 45-degree interface 2.

According to the invention, through a novel light path design, the backlight monitoring of parallel multi-channel transmission is realized, the incident collimating lens array 6 and the backlight monitoring collimating lens array 8 can adopt the same array lens, and the backlight monitoring function is realized without additionally adding lenses, so that the parallel light path channels of the array lenses are fully utilized, and a backlight monitoring scheme is provided for high-speed parallel transmission products such as COB (chip on board), AOC (automated optical inspection) and the like, thereby being beneficial to realizing an active coupling packaging scheme and a passive coupling packaging scheme.

The lens base body 1 provided with the first 45-degree interface 2 and the second 45-degree interface 3 and the lens base body 1 provided with the third 45-degree interface 4 and the fourth 45-degree interface 5 can be integrally arranged or separately arranged, when the lens base bodies are separately arranged, the lens base body 1 comprises the first lens base body 1 and the second lens base body 1, the first 45-degree interface 2 and the second 45-degree interface 3 are arranged on the first lens base body 1, and the third 45-degree interface 4 and the fourth 45-degree interface 5 are arranged on the second lens base body 1, so that the manufacturing is simpler and the realization is easier due to the separate arrangement.

Preferably, in this embodiment, the third 45 ° interface 4 and the fourth 45 ° interface 5 are both plated with a reflective film or are attached with a reflective membrane, so that light passing through the third 45 ° interface 4 and the fourth 45 ° interface 5 is sufficiently reflected, and the performance of the optical assembly is ensured.

Example 2:

as shown in fig. 3 and 4, embodiment 2 of the present invention provides a parallel multi-channel transmission optical assembly with backlight monitoring, which includes a lens substrate 1, an incident collimating lens array 6, a backlight monitoring collimating lens array 8, an exit focusing lens array 7, a receiving end focusing lens array 9, a VCSEL chip array 10, a backlight monitoring chip array 11, and a receiving chip array 12, where the VCSEL chip array 10 is aligned in coupling with the incident collimating lens array 6, the backlight monitoring chip array 11 is aligned in coupling with the backlight monitoring collimating lens array 8, the receiving chip array 12 is aligned in coupling with the receiving end focusing lens array 9, and each chip of each chip array corresponds to each lens of the corresponding lens array one by one. The incident collimating lens array 6 and the backlight monitoring collimating lens array 8 use the same array lens, and the difference between this embodiment and embodiment 1 is that the array lens has two rows of channels, which are 24 channels in total, and in other embodiments, the array lens can be further configured as more than two rows of channels as needed. The VCSEL chip array 10 is 2 x 4, the backlight monitoring chip array 11 is 2 x 4, the receiving chip array 12 is 2 x 4, the array lens serves as the incident collimation lens array 6 and the backlight monitoring collimation lens array 8, parallel light path channels of the array lens are fully utilized, and coupling is facilitated.

The incident collimating lens array 6, the backlight monitoring collimating lens array 8 and the receiving end focusing lens array 9 are arranged on the same side of the lens substrate 1, and the emergent focusing lens array 7 is arranged on the other side of the lens substrate 1 and forms an angle of 90 degrees with the incident collimating lens array 6; the lens base body 1 is provided with a first 45-degree interface 2 and a second 45-degree interface 3 which are parallel to each other, air is arranged between the first 45-degree interface 2 and the second 45-degree interface 3, the structure is simple to manufacture, and the lens base body 1 is further provided with a third 45-degree interface 4 and a fourth 45-degree interface 5 which are perpendicular to each other. Light emitted from two rows of 8 chips of the VCSEL chip array 10 is incident on the first 45 ° interface 2 through the incident collimating lens array 6, a part of the light is reflected to the emergent focusing lens array 7 through the first 45 ° interface 2 to be converged, and is coupled into an optical fiber, and the other part of light passes through the first 45-degree interface 2, enters the second 45-degree interface 3 through air refraction and is emitted out, so that the light incident to the first 45-degree interface 2 is ensured to be parallel to the light emitted from the second 45-degree interface 3, the light path is simpler, the light reaches the backlight monitoring collimating lens array 8 after being reflected by the third 45-degree interface 4 and the fourth 45-degree interface 5, the light emitted from the incident collimating lens array 6 is parallel to the light reaching the backlight monitoring collimating lens array 8, the backlight monitoring collimating lens array 8 converges light onto the backlight monitoring chip array 11. The receiving chip array 12 receives light from the optical fiber end, the light at the optical fiber end is transmitted as parallel light after passing through the optical fiber end collimating lens, and is converged on the receiving chip array 12 by the receiving end focusing lens array 9 after being reflected by the first 45-degree interface 2.

According to the invention, through a novel light path design, the backlight monitoring of parallel multi-channel transmission is realized, the incident collimating lens array 6 and the backlight monitoring collimating lens array 8 can adopt the same array lens, and the backlight monitoring function is realized without additionally adding lenses, so that the parallel light path channels of the array lenses are fully utilized, and a backlight monitoring scheme is provided for high-speed parallel transmission products such as COB (chip on board), AOC (automated optical inspection) and the like, thereby being beneficial to realizing an active coupling packaging scheme and a passive coupling packaging scheme.

The lens base body 1 of setting first 45 interface 2 with second 45 interface 3 and setting third 45 interface 4 with the lens base body 1 of fourth 45 interface 5 can be as an organic whole sets up, also can separately set up, during separately setting up, lens base body 1 includes first lens base body 1 and second lens base body 1, first 45 interface 2 with second 45 interface 3 set up in on the first lens base body 1, third 45 interface 4 with fourth 45 interface 5 set up in on the second lens base body 1 for the preparation is simpler, realizes easily.

Preferably, in this embodiment, the third 45 ° interface 4 and the fourth 45 ° interface 5 are both plated with a reflective film or are attached with a reflective membrane, so that light passing through the third 45 ° interface 4 and the fourth 45 ° interface 5 is sufficiently reflected, and the performance of the optical assembly is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. The utility model provides a take parallel multichannel transmission optical assembly of monitoring in a poor light which characterized in that: the device comprises a lens base body, an incident collimating lens array, a backlight monitoring collimating lens array, an emergent focusing lens array, a VCSEL chip array and a backlight monitoring chip array; the incident collimating lens array and the backlight monitoring collimating lens array are arranged on the same side of the lens base body, and the emergent focusing lens array is arranged on the other side of the lens base body; the lens substrate is provided with a first 45-degree interface and a second 45-degree interface which are parallel to each other, and the lens substrate is also provided with a third 45-degree interface and a fourth 45-degree interface which are perpendicular to each other;
light emitted from the VCSEL chip array is incident on the first 45-degree interface through the incident collimating lens array, one part of the light is reflected to the emergent focusing lens array through the first 45-degree interface and is emitted, the other part of the light enters the second 45-degree interface through the first 45-degree interface and is emitted, the light is reflected through the third 45-degree interface and the fourth 45-degree interface and then reaches the backlight monitoring collimating lens array, and the backlight monitoring collimating lens array converges the light on the backlight monitoring chip array;
the incident collimating lens array and the backlight monitoring collimating lens array adopt the same array lens, and the incident collimating lens array and the backlight monitoring collimating lens array are positioned in the same row.
2. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: the array lens has a plurality of rows of array channels.
3. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: light incident to the first 45 ° interface is parallel to light exiting from the second 45 ° interface.
4. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: air is arranged between the first 45-degree interface and the second 45-degree interface.
5. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: the lens base body comprises a first lens base body and a second lens base body, the first 45-degree interface and the second 45-degree interface are arranged on the first lens base body, and the third 45-degree interface and the fourth 45-degree interface are arranged on the second lens base body.
6. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: and the third 45-degree interface and the fourth 45-degree interface are both plated with a reflective film or adhered with a reflective membrane.
7. The parallel multi-channel transmission optical assembly with backlight monitoring of claim 1, wherein: the receiving end focusing lens array and the incident collimating lens array are arranged on the same side of the lens base body, the receiving chip array receives light from an optical fiber end, the light at the optical fiber end is transmitted as parallel light after passing through the optical fiber end collimating lens, and after being reflected by the first 45-degree interface, the light is converged on the receiving chip array by the receiving end focusing lens array.
CN201810254212.0A 2018-03-26 2018-03-26 Parallel multi-channel transmission optical assembly with backlight monitoring CN108594370B (en)

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CN108594370B true CN108594370B (en) 2020-05-05

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US9429725B2 (en) * 2013-04-19 2016-08-30 Avago Technologies General Ip (Singapore) Pte. Ltd. Bidirectional parallel optical transceiver module and a method for bidirectionally communicating optical signals over an optical link
JP6146573B2 (en) * 2013-12-24 2017-06-14 APRESIA Systems株式会社 Lens block and optical communication module
TWI584011B (en) * 2015-09-03 2017-05-21 前源科技股份有限公司 Optically coupled device and optical transmission system
US9588308B1 (en) * 2016-05-06 2017-03-07 Forward Optics Co., Ltd. Optical element with light-splitting function

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