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Single-fiber bidirectional symmetrical optical transceiver optical element for 10G-EPON

A 10G-EPON, optical transceiver module technology, applied in the field of single-fiber bidirectional optical transceiver modules, can solve the problems of large size in the length direction of the single-fiber bidirectional component transmitter, low coupling efficiency, and difficulty in packaging, etc., and is conducive to high-frequency signals. Transmission, dimensional error tolerance is large, the effect of increasing electrical stability

Active Publication Date: 2010-11-17
INNOLIGHT TECHNOLOGY (SUZHOU) LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

Reflected light has adverse effects on the stability of the light source spectral output power, affecting high-speed transmission performance, and cannot meet the high-speed uplink transmission performance requirements of 10G-EPON single-fiber bidirectional symmetrical optical transceiver module optical components; due to the size of the SC connector required by 10G-EPON It is too large to meet the SFP+ module package; the transmitter uses a spherical lens for focusing, the coupling efficiency is low, and it cannot meet the requirements of 10G-EPON for output optical power. If a standard TO48 package with a DFB laser and a set of aspheric lenses is used, then The length direction of the transmitting end of the single-fiber bidirectional component is relatively large, which conflicts with the minimum solderable size of the circuit board after installation, and is not easy to be packaged in the SFP+ module

Method used

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  • Single-fiber bidirectional symmetrical optical transceiver optical element for 10G-EPON
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  • Single-fiber bidirectional symmetrical optical transceiver optical element for 10G-EPON

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Embodiment

[0025] The structure of the optical component of the single-fiber bidirectional symmetrical optical transceiver module for 10G-EPON is as follows: figure 2 As shown, including transmitter 1, receiver 2, optical mirror group and SC connector, transmitter 1 and receiver 2 are placed side by side in parallel, and the optical path principle is as follows Figure 3a As shown, the optical lens group 3 includes a first prism 31, a second prism 32, a first filter 33 and a second filter 34, and the SC type connector 4 is placed at the symmetrical position of the transmitting end 1 and the receiving end 2, and the transmitting A first filter 33 is arranged between the terminal 1 and the SC-type connector 4, the first filter 33 forms an angle of 45 degrees to the direction of the incident light, and a first prism 31 is arranged between the first filter 33 and the transmitting end 1, And an optical isolator 35 is arranged between the first prism 31 and the transmitting end 1; a second fi...

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Abstract

The invention relates to a single-fiber bidirectional symmetrical optical transceiver optical element for 10G-EPON, which comprises a transmitting terminal, a receiving terminal and an optical lens group. The transmitting terminal and the receiving terminal are arranged in parallel side by side. The optical lens group comprises a first prism, a second prism, a first filter plate and a second filter plate. An SC-type connector is arranged at the position at which the transmitting terminal and the receiving terminal are symmetrical. The first filter plate is arranged between the transmitting terminal and the SC-type connector. The first filter plate is an angle of 45 degrees to the direction of incident light. The first prism is arranged between the first filter plate and the transmitting terminal. The second filter plate is arranged between the first filter plate and the receiving terminal. The second prism is arranged between the second filter plate and the first filter plate. The single-fiber bidirectional symmetrical optical transceiver optical element of the invention better meets the standard of the 10G-EPON on main performance such as output optical power, sensitivity and the like and is compatible with an SFP+ standard module in shape.

Description

technical field [0001] The invention relates to a single-fiber bidirectional optical transceiver module in the optical communication technology, in particular to a single-fiber bidirectional symmetrical optical transceiver module optical assembly for 10G-EPON. Background technique [0002] At present, the application of optical fiber network is becoming more and more popular, and fiber access FTTH (Fiber To The Home, fiber to the home) projects around the world are gradually implemented. As one of the main access technologies of FTTH, EPON technology is directly developed based on Ethernet technology, and can seamlessly integrate with IP and Ethernet trends. It has good scalability, simple technology, and convenient multicasting. Compared with other optical network access technologies, it is more favored by people. The demand for single-fiber bidirectional components in small form-factor pluggable (SFP+) packages has also gradually increased. However, the structure size of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42H04B10/24H04B10/40
Inventor 李伟龙孙雨舟施高鸿刘圣
Owner INNOLIGHT TECHNOLOGY (SUZHOU) LTD
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