Introduction and Features of Passive Optical LAN (POL)

{"news_id":8249,"is_preview":0,"news_info":{"id":8249,"company_id":194,"user_id":406,"author":"Queenton","website_id":836,"pub_date":"2023-10-26 17:05:09","urla":"introduction-and-features-of-passive-optical-lan-pol-","description":"","image_url":"https:\/\/oss.matchpages.cn\/matchpages\/common\/2023\/1026\/2794\/653a2f87630a3\/compare-fibre-8xnaQKWjDrM-unsplash.jpg","image_alt":"compare-fibre-8xnaQKWjDrM-unsplash.jpg","title":"Introduction and Features of Passive Optical LAN (POL)","content":"<p>As network bandwidth increases and terminal devices evolve, services like HD video conferencing, cloud services, massive data exchanges, and mobile office operations enable enterprises to be more efficient and open platforms. This drives the digitalization and information-oriented transformation of companies, escalating the demand for greater network bandwidth and speed. Traditional enterprise and campus local area networks (LANs) struggle with these bandwidth challenges, indicating a need for network upgrades. After nearly 30 years, conventional structured cabling systems no longer suffice. Large campuses and building network constructions face several challenges:<\/p>\n<ul>\n<li>Large numbers of switches occupy room space, consume significant power, and are hard to cool.<\/li>\n<li>Complex connections between aggregation routers take up conduit space and are challenging to wire and maintain.<\/li>\n<li>Dispersed switch locations complicate management and necessitate large maintenance teams.<\/li>\n<li>Limited transmission distance.<\/li>\n<li>Difficulties in adding new devices to the network.<\/li>\n<li>Challenges in upgrading and expanding.<\/li>\n<\/ul>\n<p>Compared to conventional cabling systems, Passive Optical LAN (POL) offers superior transmission distance, smooth network upgrades, high reliability, flexible networking, easy deployment, and streamlined maintenance. POL integrates fiber to the desktop, fiber to user units, and fiber to public areas. By incorporating network equipment, it simplifies the three-layer network into a flat two-tier architecture, allowing data, voice, video surveillance, wireless systems, and more to be integrated into one fiber network, presenting unparalleled advantages.<\/p>\n<p><strong>Composition and Transmission Method of POL<\/strong><\/p>\n<p>POL utilizes PON (Passive Optical Network) technology, a point-to-multipoint structure encompassing three main components: OLT, ODN, and ONU.<\/p>\n<p>In POL networking, conventional LAN aggregation switches are replaced by OLT; copper cables are replaced with optical fiber; access switches are replaced by passive splitters; ONUs provide layer 2\/3 functionality, connecting users' data, voice, and video services either wirelessly or wired.<\/p>\n<p>PON networks broadcast in the downstream direction, splitting the OLT-emitted optical signal into multiple signals carrying identical information for each ONU. The ONU selectively receives messages intended for it and discards the rest. For the upstream, the OLT allocates a timeslot to each ONU, ensuring synchronized signal transmission.<\/p>\n<p>Understanding PON technology helps electrical designers utilize it more proficiently, especially the passive nature of its optical distribution network.<\/p>\n<p><strong>POL's Extended Transmission Capability<\/strong><\/p>\n<p>With a hub-spoke design, POL optimizes LAN cabling and network structures, resulting in a flatter, more straightforward system. The ODN's maximum transmission distance reaches 20KM, surpassing traditional cabling systems. For large infrastructures like campuses, airports, and stadiums, POL simplifies network construction challenges by eliminating the need for additional active devices, easing deployment constraints.<\/p>\n<p><strong>Easy Deployment of POL Network<\/strong><\/p>\n<p>POL doesn't require dedicated weak electricity rooms or cabinets. Splitters are flexibly placed according to on-site conditions, streamlining maintenance operations. ONUs can be pre-configured based on deployment plans, and once installed and powered, the OLT auto-discovers and adds them, improving deployment efficiency and reducing costs.<\/p>\n<p>POL's architecture simplifies the traditional cabling network and saves up to 80% of weak electricity room space, 60% of power consumption, reduces network construction costs by 30%, and slashes operational expenses by over 60%.<\/p>\n<p><strong>Upgradeability of POL Network<\/strong><\/p>\n<p>Traditional cabling systems have a lifespan of about 10-15 years. However, the swift proliferation of smart buildings and IoT necessitates continuous network availability. POL's optical fibers offer GPON and 10GPON bandwidths, with potential for future upgrades to 50GPON\/100GPON, effectively prolonging the network's lifecycle while maintaining its foresight.<\/p>\n<p><strong>Reliability of POL Network<\/strong><\/p>\n<p>POL, using the PON architecture, minimizes failure points by eliminating the need for intermediary active devices. It's widely used in various organizations and venues, tailored according to business requirements and networking scales.<\/p>\n<p><strong>Security Measures in POL Network<\/strong><\/p>\n<p>POL safeguards against electromagnetic interference and leakage, supports AES128 encryption, MAC binding, 802.1x authentication, user isolation, broadcast suppression, and DoS attack prevention. It has multiple security features ensuring robust protection against unauthorized access and potential threats.<\/p>\n<p>Andre Kindness, a chief analyst at Forrester, remarked that POL reconstructs traditional campus networks with optical fibers, catering to deployment, maintenance, and evolution needs. With an annual growth rate of 18.8%, the rise of IoT will usher in a boom for passive optical network technology. Given its multifunctionality, environmental friendliness, cost-effectiveness, flexibility, and reliability, POL efficiently supports enterprise digitization, heralding the new era of Fixed Fibre F5G.<\/p>","discuss":0,"seo_title":"Introduction and Features of Passive Optical LAN (POL)","seo_keyword":"","seo_describe":"As network bandwidth increases and terminal devices evolve, services like HD video conferencing, cloud services, massive data exchanges, and mobile office operations enable enterprises to be more efficient and open platforms. This drives the digitalization and information-oriented transformation of companies, escalating the demand for greater network bandwidth and speed. Traditional enterprise and campus local area networks (LANs) struggle with these bandwidth challenges, indicating a need for n","track_code":"","viewer":"","source_copy_id":0,"sort":2,"status":0,"data_time":"2023-10-26 17:21:13","create_time":"2023-10-26 17:05:09","update_time":"2023-11-03 11:54:23","type_items":[{"id":2209,"website_id":836,"name":"Technology","urla":""}],"tag_items":[]}}

<p>As network bandwidth increases and terminal devices evolve, services like HD video conferencing, cloud services, massive data exchanges, and mobile office operations enable enterprises to be more efficient and open platforms. This drives the digitalization and information-oriented transformation of companies, escalating the demand for greater network bandwidth and speed. Traditional enterprise and campus local area networks (LANs) struggle with these bandwidth challenges, indicating a need for network upgrades. After nearly 30 years, conventional structured cabling systems no longer suffice. Large campuses and building network constructions face several challenges:</p>
<ul>
<li>Large numbers of switches occupy room space, consume significant power, and are hard to cool.</li>
<li>Complex connections between aggregation routers take up conduit space and are challenging to wire and maintain.</li>
<li>Dispersed switch locations complicate management and necessitate large maintenance teams.</li>
<li>Limited transmission distance.</li>
<li>Difficulties in adding new devices to the network.</li>
<li>Challenges in upgrading and expanding.</li>
</ul>
<p>Compared to conventional cabling systems, Passive Optical LAN (POL) offers superior transmission distance, smooth network upgrades, high reliability, flexible networking, easy deployment, and streamlined maintenance. POL integrates fiber to the desktop, fiber to user units, and fiber to public areas. By incorporating network equipment, it simplifies the three-layer network into a flat two-tier architecture, allowing data, voice, video surveillance, wireless systems, and more to be integrated into one fiber network, presenting unparalleled advantages.</p>
<p><strong>Composition and Transmission Method of POL</strong></p>
<p>POL utilizes PON (Passive Optical Network) technology, a point-to-multipoint structure encompassing three main components: OLT, ODN, and ONU.</p>
<p>In POL networking, conventional LAN aggregation switches are replaced by OLT; copper cables are replaced with optical fiber; access switches are replaced by passive splitters; ONUs provide layer 2/3 functionality, connecting users' data, voice, and video services either wirelessly or wired.</p>
<p>PON networks broadcast in the downstream direction, splitting the OLT-emitted optical signal into multiple signals carrying identical information for each ONU. The ONU selectively receives messages intended for it and discards the rest. For the upstream, the OLT allocates a timeslot to each ONU, ensuring synchronized signal transmission.</p>
<p>Understanding PON technology helps electrical designers utilize it more proficiently, especially the passive nature of its optical distribution network.</p>
<p><strong>POL's Extended Transmission Capability</strong></p>
<p>With a hub-spoke design, POL optimizes LAN cabling and network structures, resulting in a flatter, more straightforward system. The ODN's maximum transmission distance reaches 20KM, surpassing traditional cabling systems. For large infrastructures like campuses, airports, and stadiums, POL simplifies network construction challenges by eliminating the need for additional active devices, easing deployment constraints.</p>
<p><strong>Easy Deployment of POL Network</strong></p>
<p>POL doesn't require dedicated weak electricity rooms or cabinets. Splitters are flexibly placed according to on-site conditions, streamlining maintenance operations. ONUs can be pre-configured based on deployment plans, and once installed and powered, the OLT auto-discovers and adds them, improving deployment efficiency and reducing costs.</p>
<p>POL's architecture simplifies the traditional cabling network and saves up to 80% of weak electricity room space, 60% of power consumption, reduces network construction costs by 30%, and slashes operational expenses by over 60%.</p>
<p><strong>Upgradeability of POL Network</strong></p>
<p>Traditional cabling systems have a lifespan of about 10-15 years. However, the swift proliferation of smart buildings and IoT necessitates continuous network availability. POL's optical fibers offer GPON and 10GPON bandwidths, with potential for future upgrades to 50GPON/100GPON, effectively prolonging the network's lifecycle while maintaining its foresight.</p>
<p><strong>Reliability of POL Network</strong></p>
<p>POL, using the PON architecture, minimizes failure points by eliminating the need for intermediary active devices. It's widely used in various organizations and venues, tailored according to business requirements and networking scales.</p>
<p><strong>Security Measures in POL Network</strong></p>
<p>POL safeguards against electromagnetic interference and leakage, supports AES128 encryption, MAC binding, 802.1x authentication, user isolation, broadcast suppression, and DoS attack prevention. It has multiple security features ensuring robust protection against unauthorized access and potential threats.</p>
<p>Andre Kindness, a chief analyst at Forrester, remarked that POL reconstructs traditional campus networks with optical fibers, catering to deployment, maintenance, and evolution needs. With an annual growth rate of 18.8%, the rise of IoT will usher in a boom for passive optical network technology. Given its multifunctionality, environmental friendliness, cost-effectiveness, flexibility, and reliability, POL efficiently supports enterprise digitization, heralding the new era of Fixed Fibre F5G.</p>