CN214750964U - BOSA assembly with semiconductor refrigerator - Google Patents

Abstract

The utility model discloses a take semiconductor cooler's BOSA subassembly mainly solves current TECCBOSA subassembly use cost height, the structure is complicated, the serious problem of optical loss. This BOSA subassembly includes the base, be fixed in the photodiode detector on the base, set up 0 optical filter in the base, 45 optical filter, bear the pipe with base one end fixed connection's lens, connect in the lens that the optoisolator of lens bear pipe one end and the lens of the other end, the TEC laser emitter who links to each other through transition connecting ring and lens, a body shell for protecting and fixed laser emitter, connect in the fiber welding ring of the base other end, imbed the in-loop coupling fiber that extends to in the base of fiber welding ring. The utility model discloses the convergent light coupling scheme of single non-ball lens is adopted in the preparation, and optic fibre one side focus is controllable, simple process, and is with low costs stability good, and the structure is nimble, can set for receiving end detector PD coupling light path distance according to actual demand, and the structural consistency is better.

Description

BOSA assembly with semiconductor refrigerator

Technical Field

The utility model belongs to the technical field of the fiber communication subassembly, specifically speaking relates to a take semiconductor cooler's BOSA subassembly.

Background

The BOSA optical component is a single-fiber bidirectional optical component, can simultaneously realize the receiving and transmitting of optical signals, and is therefore widely applied to the bearing transmission of various communication network services. In recent years, optical fiber communication devices are continuously developed to high speed, high bandwidth and large capacity, and the requirements for the performance stability of the devices are higher and higher, so that a light transceiving BOSA assembly (TEC BOSA) with a built-in TEC thermoelectric cooler is developed to adapt to a complex working environment.

The TEC BOSA component receives light emitted by the laser and needs to be coupled by a lens to enter the optical fiber for transmission. Because the TEC LD laser is limited by the tolerance of discrete dimensions of a plurality of parts such as a refrigerator inside the device, and the direct use of a non-spherical lens for sealing the cap has a poor effect, which easily causes the problems of focal length dispersion and optical path eccentricity, the TEC LD laser is basically packaged by a flat window tube cap in most cases. At present, a parallel light double-lens scheme is mostly adopted in the industry, namely 2 collimator lenses (Glens) are used for coupling, emitted light of a laser is converted into parallel light through a 1 st Glens, the parallel light is converted into convergent light through a 2 nd Glens and is coupled into an optical fiber again for receiving, a certain use requirement can be met through two collimating Glens structures, but the parallel light double-lens scheme also has the defects that two Glens are needed to be used, the Glens is high in price and use cost, light is subjected to optical loss such as eccentricity through twice conversion, and the structure is relatively complex. In addition, partial focal length errors generated by the dual-lens packaging method may cause the coupling position deviation of the optical fiber ferrule, which causes the PD coupling deviation of the receiving end and even the poor coupling. The production efficiency and yield of the dual lens solution are still limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take BOSA subassembly of semiconductor cooler mainly solves current TEC BOSA subassembly use cost height, the structure is complicated, the serious problem of optical loss.

In order to achieve the above object, the utility model adopts the following technical scheme:

a BOSA component with a semiconductor refrigerator comprises a base, a photodiode detector fixed on the 90-degree direction of the base and used for receiving a downlink optical signal, a 0-degree optical filter arranged in the base and facing the receiving end of the photodiode detector, a 45-degree optical filter arranged in the base and used for filtering and splitting waves and turning the optical signal, a TEC laser emitter fixedly connected with one end of the base, a lens bearing tube arranged on the TEC laser emitter, an optical isolator connected with one end of the lens bearing tube, a lens connected with the other end of the lens bearing tube and fixedly connected with the TEC laser emitter, the optical fiber protection device comprises a tube body shell used for protecting and fixing a laser transmitter, an optical fiber welding ring connected to the other end of the base, a coupling optical fiber embedded into the optical fiber welding ring and extending into the base, and a protection sleeve connected with the optical fiber welding ring and covering the coupling optical fiber.

Further, the TEC laser transmitter is fixedly connected with the lens through a transition connection ring.

Further, the protective sheath is the plastic protective sheath.

Further, the Lens is a high power aspheric Lens.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a single Lens of high coupling efficiency converges optical coupling, preparation simple process, it is with low costs, and Lens and optical isolator integration are connected, relatively independent with BOSA subassembly base, and stability is good, does not receive the influence of external assembly strength, and the structure is nimble, can set for receiving terminal PD coupling light path distance according to actual demand in the certain limit, and the structure uniformity is better.

(2) The utility model discloses a relative BOSA subassembly base of laser emitter is independent, is convenient for all can adjust the relative smooth distance of joining in marriage of body shell and position when lens coupling and BOSA base coupling to adjust the coupling position of receiving the PD, reduce the influence of focus coupling error to receiving the subassembly performance, improve the product yield.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Wherein, the names corresponding to the reference numbers are:

the device comprises a base 1, a photodiode detector 2, an optical filter 3-0 degrees, an optical filter 4-45 degrees, a lens bearing tube 5, an optical isolator 6, a lens 7, a transition connecting ring 8, a TEC laser emitter 9, a tube body shell 10, an optical fiber welding ring 11, a coupling optical fiber 12 and a protective sleeve 13.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Examples

As shown in fig. 1 and 2, the utility model discloses a BOSA subassembly with semiconductor cooler, including base 1, this base mainly used supports whole device structure, is fixed with photodiode detector 2 that is used for receiving downstream optical signal on the base 1, is provided with in the base 1 just to 0 optical filter 3 of photodiode detector 2 receiving terminal, and 0 optical filter 3 mainly used filters received signal, prevents other signal interference. A 45 ° optical filter 4 for filtering and splitting the wave and turning the optical signal is also provided in the base 1. The optical signal transmits an uplink laser signal through a TEC laser transmitter on one side of the base, the TEC laser transmitter is protected and fixed through a laser tube shell, and a high-power aspheric Lens is connected to the rear of the TEC laser transmitter through a transition connecting ring 8 and used for focusing laser emitted by the laser transmitter and coupling the laser into an optical fiber for transmission. Meanwhile, the high-power aspheric Lens is mounted through a Lens bearing tube, and the other end of the Lens bearing tube is fixedly connected with an optical isolator 6 which prevents reverse light from entering the laser emitter and influencing the stability of the laser. And an optical fiber welding ring is fixed at the other end of the base through laser welding, a coupling optical fiber 12 which extends into the base 1 and is used for transmitting and receiving optical signals in a bidirectional transmission mode is embedded into the optical fiber welding ring 11, and a plastic protective sleeve 13 is coated outside the coupling optical fiber 12.

In this embodiment, the device adopts the single Lens convergent optical coupling of aspheric of high coupling efficiency, and preparation simple process, it is with low costs, and Lens and optoisolator integration are linked, relatively independent with BOSA subassembly base, and stability is good, does not receive the influence of external assembly strength, and the structure is nimble, can set for receiving terminal PD coupling light path distance according to the actual demand in certain extent, and the yield is higher, and the structure uniformity is better.

Through the design, the utility model discloses preparation simple process, it is with low costs stability good, not influenced by external assembly strength, the structure is nimble, can set for the coupling light path distance according to the actual demand in the certain limit, and the structural consistency is better. Therefore, compared with the prior art, the utility model has the substantive characteristics and progress.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims (4)

1. A BOSA component with a semiconductor refrigerator is characterized by comprising a base (1), a photodiode detector (2) fixed on the base (1) in a 90-degree direction and used for receiving downlink optical signals, a 0-degree optical filter (3) arranged in the base (1) and just facing to a receiving end of the photodiode detector (2), a 45-degree optical filter (4) arranged in the base (1) and used for filtering and splitting waves and enabling optical signals to turn, a TEC laser emitter (9) fixedly connected with one end of the base (1), a lens bearing tube (5) arranged on the TEC laser emitter (9), an optical isolator (6) connected with one end of the lens bearing tube (5), a lens (7) connected with the other end of the TEC bearing tube (5) and fixedly connected with the TEC laser emitter (9), and a tube body shell (10) used for protecting and fixing the TEC laser emitter (9), the optical fiber welding device comprises an optical fiber welding ring (11) connected to the other end of the base, a coupling optical fiber (12) embedded in the optical fiber welding ring (11) and extending into the base (1), and a protective sleeve (13) connected with the optical fiber welding ring (11) and covering the coupling optical fiber (12).

2. The BOSA assembly with a semiconductor cooler according to claim 1, wherein the TEC laser emitter (9) is fixedly connected to the lens (7) through a transition connection ring.

3. The BOSA assembly with semiconductor cooler according to claim 2, wherein the protective sheath (13) is a plastic protective sheath.

4. A BOSA assembly with a semiconductor cooler according to claim 3, characterized in that the Lens (7) is a high power aspheric Lens.

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