Optical network unit device for mutual-excitation multi-wavelength dynamic scheduling in passive optical network (PON)

A passive optical network and optical network unit technology, applied in the field of optical network unit devices, can solve the problems of complex structure and high cost, and achieve the effects of improving utilization rate and increasing uplink transmission bandwidth

Inactive Publication Date: 2010-11-24
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology needs to send the seed excitation wavelength from the local OLT, and then send it to each ONU after power div

Method used

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  • Optical network unit device for mutual-excitation multi-wavelength dynamic scheduling in passive optical network (PON)
  • Optical network unit device for mutual-excitation multi-wavelength dynamic scheduling in passive optical network (PON)
  • Optical network unit device for mutual-excitation multi-wavelength dynamic scheduling in passive optical network (PON)

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Embodiment

[0021] like figure 1 As shown, this embodiment includes: an uplink data transmitter 8, a downlink data receiver 10, and a third optical circulator 9, wherein: the output end of the third optical circulator 9 is connected to the downlink data receiver 10 to transmit downlink data optical signals , the input end of the third optical circulator 9 is connected to the uplink data transmitter 8 to transmit the uplink data optical signal.

[0022]The uplink data transmitter 8 generates an uplink data optical signal, including: a first FP multi-longitudinal mode laser 1 and a second FP multi-longitudinal mode laser 5, an adjustable bandpass filter 2, a first optical circulator 3, a second FP multi-longitudinal mode laser Two optical circulators 4, 1 × 2 optical splitters / couplers 6 and control modules 7 with a splitting ratio of 90:10, wherein: the output end of the first FP multi-longitudinal mode laser 1 is connected to the adjustable bandpass filter 2 The input end is connected to...

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Abstract

The invention discloses an optical network unit device for mutual-excitation multi-wavelength dynamic scheduling in a passive optical network (PON), belonging to the technical field of optical communication. The optical network unit device comprises an uplink data transmitter, a downlink data receiver and an optical circulator, wherein the output end of the optical circulator is connected with the uplink data transmitter so as to transmit downlink data optical signals, and the input end of the optical circulator is connected with the uplink data transmitter so as to transmit uplink data optical signals; and the uplink data transmitter comprises two FP multi-longitudinal model lasers with the same model intervals, an adjustable band-pass filter, two optical circulator, an optical splitting and coupling device and a control module. Based on the mutual-excitation working mode of two FP multi-longitudinal model lasers, the invention can dynamically generate uplink optical carrier with adjustable multi-wavelength, flexibly and effectively share all uplink wavelength resources, improve the utilization rate of the uplink wavelength resources, has simple structure and low cost, and meet the development requirement on rapid increase of user uplink access capability.

Description

technical field [0001] The invention relates to a device in the technical field of optical communication, in particular to an optical network unit device for mutual excitation and multi-wavelength dynamic scheduling in a passive optical network. Background technique [0002] In recent years, the development of passive optical network (PON) technology has gradually matured, and it has been widely deployed in the United States, South Korea, Japan and other countries. Many research institutions and communication companies at home and abroad have invested in research and development of the best broadband access solution. With the wide application of bandwidth-intensive services, such as video conferences (videoconference), high-definition television (HDTV), video on demand (VoD), or distributed computing applications in optical access networks, user-side optical network unit devices (Optical Network Unit, ONU) requires the average uplink access bandwidth to reach at least gigab...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04B10/20H04B10/27
Inventor 朱敏肖石林郭薇毕美华陈荷
Owner SHANGHAI JIAO TONG UNIV
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