A prism isolator and optical device

Abstract

The invention discloses a prism isolator and an optical device. The prism isolator is provided with a first light-passing surface and a second light-passing surface which are arranged opposite to eachother, a plane where the first light-passing surface is located is intersected with a plane where a second light-passing surface is located, reflected light of a first light beam emitted by a laser and being incident into the prism isolator can avoid the laser, and a second light beam emitted from optical fibers and being incident into the second light-passing surface exits from the first light-passing surface to avoid the laser. Compared with a light polarization isolator in the prior art, the prism isolator can suppress the condition that the reflected light generated by exiting light of the laser on an optical path returns to the laser, the exiting light from the optical fiber end into the laser is isolated, the advantages of being simple in structure, simple in manufacturing technology and low in cost are achieved, and miniaturized packaging of the optical device with high isolation is easily achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of optical communication, in particular to a prism isolator and an optical device. 【Background technique】 [0002] In the light-emitting device, the laser light emitted by the laser is coupled to the optical fiber through the optical path for transmission. When the laser passes through the interface of each device in the optical path, due to the Fresnel reflection phenomenon, there will be different degrees of return light. The coupling light between the laser and the optical fiber The stronger the energy, the stronger the light energy back to the laser. The superimposition and reflection of the reflected light energy at each interface will cause the resonant cavity of the laser to be disturbed by the outside world, causing the performance of the laser to deteriorate, causing the communication quality of optical fiber communication to decline sharply. [0003] In a device that integrates light emitting and...

AI Technical Summary

Problems solved by technology

Due to the existence of the magnet ring, the miniaturized packaging of optical isolation has also encountered a bottleneck, and it is difficult to make a breakthrough

In addition, because the magnet ring is magnetic, the degaussing of the magnet ring will lead to the direct failure of the optical polarization isolator, and in the actual production process of the optical polarization isolator and the assembly process with the optical device, the magnet ring is very easy to absorb iron filings in the environment Metal substances, such as metal substances, cause the risk of contamination of the cleanliness of the light-transmitting surface of the optical polarization isolator

Finally, when the optical polarization isolator is installed on the optical device, it is necessary to rotate the optical polarization isolator in the direction of propagation of the vertical optical path to find the best angle matching the polarization direction of the laser in order to obtain the maximum optical power, that is, the The assembly process of the device is also relatively cumbersome

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