Single-mode parallel optical module

Abstract

The invention relates to a single-mode parallel optical module, which comprises an outer shell, a PCB, an optical device, a jumper and an adapter inner core which are installed in the outer shell, wherein the PCB and the optical device are connected by means of a flexible circuit board, the optical device is connected with the jumper, the jumper is connected with the adapter inner core, the optical device comprises a shell body and a semiconductor refrigerator installed in the shell body, a chip heat sink and a lens are arranged on the semiconductor refrigerator, a light emitting chip is arranged on the chip heat sink, the light emitting chip is connected with the flexible circuit board, the light emitting chip is arranged adjacent to the lens, one side of the lens is provided with an isolator, an inserting core cushion block is arranged in the shell body, a ceramic inserting core is arranged on the inserting core cushion block, the shell body is further provided with a ceramic sleeve,the ceramic sleeve is connected with the ceramic inserting core, and the ceramic sleeve extends to the outside of the shell body. The single-mode parallel optical module has the advantages of miniaturization, excellent heat dissipation performance, high reliability, high coupling efficiency, easy coupling, low production process difficulty, batch production and the like.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a single-mode parallel optical module. Background technique [0002] At present, the demand for optical communication is to provide higher and faster bandwidth and speed in a smaller space and lower energy consumption. Low-cost optical transmission solution for distances of 500 meters. [0003] The parallel optical module mainly transmits and receives data in one optical module through the collection of multiple lasers and receivers. Parallel optical modules are generally multi-mode and suitable for short-distance communication, generally less than 300m for high-bandwidth computing and computing applications. For long-distance (greater than 500m) communication, a single-mode optical module solution with wavelength division multiplexing and demultiplexing is usually used. However, due to the large link loss in the wavelength division multiplexing scheme, the optical power b...

AI Technical Summary

Problems solved by technology

[0006] At the same time, AWG chips have factors such as large size, insertion loss, and difficult coupling. AWG chips have the characteristics of temperature fluctuations. Temperature changes will lead to narrowing of the passband and affect optical signal transmission.

The TFF filter scheme is to converge the optical fibers together through the basic principle of optics, which requires extremely high precision in the placement position of the optical chip size, because after multiple reflections, the error will be multiplied, resulting in the coupling of the subsequent chips The efficiency is low. The TFF filter solution is fixed by glue, and the temperature change will cause the micro-displacement of the filter. The micro-displacement of the filter will be amplified by multiple reflections, which will lead to a decrease in the coupling efficiency and make the emitted optical power not stable. Stable, difficult to meet coupling requirements and reliability requirements cannot be met, not suitable for mass production

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