Wavelength-adjustable TOSA

Abstract

The utility model discloses a wavelength-adjustable TOSA, and the TOSA comprises an emission unit which is used for completing the photoelectric conversion and guaranteeing the modulation and the quality of an optical carrier; the wavelength modulation unit at least comprises an optical fiber MZ interferometer and a temperature control assembly used for performing temperature control on the optical fiber MZ interferometer; and the driving circuit is used for amplifying an optical signal and can drive the transmitting unit and the temperature control assembly. The interference condition of the MZ interferometer is changed through the temperature control assembly, the purpose of wavelength modulation is achieved, only the composition of the coupling optical fiber needs to be finely adjusted structurally, meanwhile, the temperature control assembly is additionally arranged, and the influence on the overall structure of the module is small.

Description

Technical Field

[0001] The utility model relates to the technical field of optical modules, in particular to a wavelength-adjustable TOSA. Background Art

[0002] The optical module with modulatable emission wavelength represents one of the cutting-edge technologies in the field of optical communications. The introduction of this technology makes the optical communication system more adaptable and flexible in the face of growing communication needs and changing network environments. By dynamically adjusting the emission wavelength of the optical module, the system can more effectively utilize optical spectrum resources and implement technologies such as optical frequency division multiplexing, thereby increasing data transmission rate and capacity. In addition, this technology enables the system to achieve dynamic network reconfiguration, adapt to different communication scenarios and application requirements, and improve network flexibility and management efficiency. In addition, through integration with the network management system, the optical module can be remotely monitored and controlled, and the emission wavelength of the optical module can be dynamically adjusted according to the real-time network status and needs to achieve the optimal configuration and performance optimization of the optical network. Therefore, the optical module with modulatable emission wavelength can provide a more flexible and efficient optical communication solution, which helps to optimize the performance and management of the optical network. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a TOSA with adjustable light emission wavelength.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: a wavelength-adjustable TOSA, comprising:

[0005] The transmitting unit is used to complete the photoelectric conversion and ensure the quality of the modulation and optical carrier;

[0006] A wavelength modulation unit, comprising at least a fiber MZ interferometer and a temperature control component for controlling the temperature of the fiber MZ interferometer;

[0007] The driving circuit is used to amplify the optical signal and drive the transmitting unit and the temperature control component.

[0008] Furthermore, the wavelength modulation unit also includes a heat preservation layer, and the heat preservation layer and the temperature control component are respectively arranged on both sides of the optical fiber MZ interferometer and wrap the optical fiber MZ interferometer, and the heat preservation layer is located at the top.

[0009] Furthermore, the temperature control component is a semiconductor refrigeration sheet.

[0010] Furthermore, the fiber MZ interferometer at least includes a hollow-core anti-resonance fiber located in the middle and two single-mode fibers respectively arranged at two ends of the hollow-core anti-resonance fiber.

[0011] Furthermore, the transmitting unit at least includes a laser and a modulator.

[0012] The beneficial effects of the utility model are embodied in:

[0013] The wavelength-adjustable TOSA of the utility model changes the interference condition of the MZ interferometer through a temperature control component to achieve the purpose of wavelength modulation, and in terms of structure, only the composition of the coupled optical fiber needs to be fine-tuned, and a temperature control component is added, which has little impact on the overall structure of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the wavelength-adjustable TOSA of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the wavelength modulation unit of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the optical fiber MZ interferometer of the utility model;

[0017] Figure 4 This is a cross-sectional view of the hollow-core anti-resonant optical fiber of the utility model;

[0018] Figure 5 It is a simulation diagram of the wavelength modulation capability of the optical fiber MZ interferometer of the utility model.

[0019] The components in the accompanying drawings are marked as follows: 1. transmitting unit; 2. wavelength modulation unit; 201. fiber MZ interferometer; 2011. hollow core antiresonant fiber; 2012. single-mode fiber; 202. temperature control component; 203. insulation layer; 3. driving circuit. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 .

[0022] The utility model provides a wavelength-adjustable TOSA, comprising:

[0023] Transmitting unit 1, used to complete the photoelectric conversion and ensure the quality of modulation and optical carrier;

[0024] The wavelength modulation unit 2 at least comprises a fiber MZ interferometer 201 and a temperature control component 202 for controlling the temperature of the fiber MZ interferometer 201;

[0025] The driving circuit 3 is used to amplify the optical signal and drive the transmitting unit 1 and the temperature control component 202 .

[0026] In one embodiment, see Figure 2 , the wavelength modulation unit 2 also includes a heat preservation layer 203, the heat preservation layer 203 and the temperature control component 202 are respectively arranged on both sides of the fiber MZ interferometer 201 and wrap the fiber MZ interferometer 201, and the heat preservation layer 203 is located at the top. In this design, the temperature control component 202 is controlled by the driving circuit 3 to provide a variable temperature; when the temperature changes, its interference condition changes to achieve wavelength modulation; the heat preservation layer 203 is set to prevent the environment of the fiber MZ interferometer 201 from being disturbed by the outside world.

[0027] In one embodiment, the temperature control component 202 is a semiconductor cooling chip.

[0028] In one embodiment, see Figure 3 and Figure 4 The fiber MZ interferometer 201 at least includes a hollow core anti-resonance fiber 2011 located in the middle and two single-mode fibers 2012 respectively arranged at the two ends of the hollow core anti-resonance fiber 2011. With this design, when light is injected into the hollow core anti-resonance fiber 2011 from the single-mode fiber 2012, a part of the light is reflected by the inner cladding wall of the fiber and transmitted in the hollow core, and the other part of the light is reflected by the outer cladding wall of the fiber and then enters the hollow core for transmission. The two beams of light form an optical path difference due to different reflection surfaces, and finally enter the single-mode fiber 2012 to form interference. When the temperature in the interference cavity changes, the optical path difference of the two beams of light changes, resulting in wavelength drift of the interference spectrum, thereby achieving the purpose of wavelength modulation.

[0029] In one embodiment, the transmitting unit 1 includes at least a laser and a modulator. This design can convert electrical signals and DC electrical signals into optical signals, ensuring the quality of modulation and optical carriers. At the same time, the position of the interference peak is also affected by the length of the hollow core anti-resonance optical fiber 2011. By changing the length of the hollow core anti-resonance optical fiber 2011, wavelength modulation of different lasers can be achieved.

[0030] See also Figure 5It should be noted that the wavelength modulation capability of the utility model is simulated by setting the hollow core antiresonant fiber length to 9mm, the cladding diameter to 33um, the inner cladding tube wall diameter to 0.5mm, and the cladding tube diameter to 22um. The change of the interference wavelength over time when the temperature changes is simulated. As shown in the figure, at 1310nm, the interference wavelength redshifts by about 0.58nm for every 10℃ increase in temperature.

[0031] In summary, the wavelength-adjustable TOSA of the utility model achieves the purpose of wavelength modulation by changing the interference conditions through temperature changes. In terms of structure, only the composition of the coupled optical fiber is fine-tuned, and a temperature control component is added, which has little impact on the overall structure of the module. In addition, according to the different wavelengths of the laser, the length of the hollow-core anti-resonant optical fiber can be flexibly selected to modulate light of different wavelengths. After the TOSA is powered on, the driving circuit 3 controls the transmitting unit 1 to emit light and couple into the optical fiber. At this time, the temperature control component 202 in the wavelength modulation unit 2 keeps the wavelength modulation unit 2 in a certain specific state according to the wavelength requirements, and stably outputs constant wavelength laser.

[0032] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0034] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wavelength tunable TOSA, characterized in that: include: The transmitting unit (1) is used to complete the photoelectric conversion and ensure the quality of the modulation and the light carrier; A wavelength modulation unit (2) comprising at least an optical fiber MZ interferometer (201) and a temperature control component (202) for controlling the temperature of the optical fiber MZ interferometer (201); The driving circuit (3) is used to amplify the optical signal and can drive the emitting unit (1) and the temperature control component (202).

2. The wavelength tunable TOSA according to claim 1, characterized in that: The wavelength modulation unit (2) further comprises a heat preservation layer (203), wherein the heat preservation layer (203) and the temperature control component (202) are respectively arranged on both sides of the optical fiber MZ interferometer (201) and wrap the optical fiber MZ interferometer (201), and the heat preservation layer (203) is located at the top.

3. The wavelength tunable TOSA according to claim 1 or 2, characterized in that: The temperature control component (202) is a semiconductor cooling plate.

4. The wavelength tunable TOSA according to claim 3, characterized in that: The optical fiber MZ interferometer (201) comprises at least a hollow core anti-resonance optical fiber (2011) located in the middle and two single-mode optical fibers (2012) respectively arranged at two ends of the hollow core anti-resonance optical fiber (2011).

5. The wavelength tunable TOSA according to claim 3, characterized in that: The transmitting unit (1) comprises at least a laser and a modulator.

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