COMBO PON optical component based on passive PLC optical waveguide technology

Abstract

The invention belongs to the technical field of optical communication and particularly relates to a COMBO PON optical component based on a passive PLC optical waveguide technology. The optical component integrates two transmitting terminals in a butterfly-shaped package through a wave-combining PLC chip, accordingly two transmitting parts and two receiving parts for outside optical path coupling are simplified into one transmitting part and two receiving parts, and coupling of outside optical paths is greatly simplified. The optical component can be installed in an XFP housing and can be alsoinstalled in an SFP+ housing, two receiving terminals adopt full-collimating optical paths, the responsivity is 1dB higher than that of a traditional scheme, and the overall yield of the optical component is improved.

Description

technical field [0001] The invention belongs to the technical field of electro-optic communication, and in particular relates to a COMBOPON optical component based on passive PLC optical waveguide technology. Background technique [0002] The Combo PON solution that integrates optical modules is the combination of GPON and XGPON OLT, using two technologies to adopt different bearer wavelengths, and combining four wavelengths in one optical module to realize independent transmission and reception processing of GPON and XGPON optical signals . The Combo PON solution with integrated optical modules is adopted. The GPON and XGPON optical wavelengths are combined in one optical module and then output from the same optical port. When upgrading XGPON, only the Combo PON line card needs to be used to replace the original OLT. GPON line card, the optical fibers on the original GPON line card are synchronously cut to the Combo PON line card to realize the coexistence of GPON and XGPO...

AI Technical Summary

Problems solved by technology

[0018] 1. Due to the use of two emitting and two receiving components using discrete components, the size of the existing optical components is too long and too wide, and can only be loaded into the XFP shell, and cannot be loaded into the standard SFP+ shell

[0019] 2. Due to the consideration of device size, the 1.25G receiving end generally uses converging light, so its responsivity is low, resulting in a small sensitivity margin at the receiving end, which affects the overall yield

[0020] 3. The 10G transmitter and 2.5G transmitter are coupled separately, and there is a risk of low optical power at the transmitter due to angle mismatch, which affects the overall yield

[0021] 4. The 0° filter at the 1.25G receiving end uses a converging optical path, resulting in poor separation isolation and large insertion loss at the transmission wavelength

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