C form-factor pluggable (CFP) optical transceiver with interleaver

Abstract

The invention discloses a C form-factor pluggable (CFP) optical transceiver with an interleaver. The CFP optical transceiver comprises a transmitter and a receiver. The transmitter has two groups of 2:1 modified multiplexers and the interleaver connected with the 2:1 modified multiplexers by an optical fiber, wherein the 2:1 modified multiplexers and the interleaver are all used for coupling two paths of optical signals with different wavelengths into the same optical fiber for transmission. The CFP optical transceiver with the interleaver is used for 40G or 100G LR4 and ER4 type CFP communication systems, has the advantages of simple structure and low cost, and is easy to package and produce in batches. In the structure, coarse wavelength division multiplexing (CWDM) / local area network-wavelength division multiplexing (LAN-WDM) optical signals with four wavelengths are multiplexed into two groups of optical signals by the 2:1 modified multiplexers (2:1MUX), and then the two groups of optical signals enter the same optical fiber by the interleaver. By the technology provided by the invention, the cost of the receiver can be reduced to 1 / 5 to 1 / 10 of that of the prior art.

Description

technical field [0001] The invention relates to an optical transceiver, in particular to a CFP optical transceiver with an optical cross-wavelength division multiplexer at an optical transmitting end. Background technique [0002] In recent years, due to the rapid increase in market demand (such as cloud computing, router-to-router connection, image transmission), optical fiber communication systems are being upgraded to 40G speeds, and 40G optical transceivers (Transponders) are the most critical in 40G optical communication systems subsystem. [0003] 40G optical transceivers require more advanced, complex and difficult technologies than 10G optical transceivers, and their costs are higher. Compared with serial 40G optical transceivers, 40G CFP (CFP: C Form-Factor Pluggable-C-type pluggable optical transceivers, such as 40G BASE LR4CFP) has the advantages of lower cost and longer transmission distance. Due to the rapid increase in communication service requirements, 40G ...

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Problems solved by technology

[0003] 40G optical transceivers require more advanced, complex and difficult technologies than 10G optical transceivers, and their costs are higher

However, at present, the packaging cost of the transmitter and receiver of 100GBASE-LR4CFP is high, the yield is low, and the cost is high, so it is difficult to mass produce

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