I. Scheme Overview

The fiber optic equipment of enterprise private networks and data centers is the key infrastructure to ensure high-speed and stable data transmission. In order to ensure the reliable operation of these fiber optic devices and reduce the failure rate, this detection and maintenance scheme is formulated.

II. Detection and Maintenance Objectives

1. Ensure the normal operation of fiber optic equipment, and reduce the number of service interruptions caused by fiber optic equipment failures to no more than [X] times per year.
2. To timely find and solve potential problems of fiber optic equipment, so that the attenuation and loss of fiber optic links are controlled within the specified range, to ensure the accuracy and stability of data transmission.
3. Extend the service life of fiber optic equipment and reduce equipment renewal and maintenance costs.

III. Detection and Maintenance Scope

1. Fiber optic cables: Including backbone fibers, branch fibers, indoor and outdoor fiber optic jumpers, etc.
2. Fiber optic connection equipment: Fiber optic distribution frames (ODF), fiber optic adapters, fiber optic couplers, fiber optic flanges, etc.
3. Fiber optic transmission equipment: Optical transceivers, fiber optic transceivers, wavelength division multiplexing (WDM)/dense wavelength division multiplexing (DWDM) equipment, optical amplifiers, etc.

IV. Detection and Maintenance Team

A professional detection and maintenance team will be formed, including members:

1. Fiber optic engineers: Responsible for technical guidance on fiber optic equipment and handling complex failures.
2. Technical personnel: Carry out daily detection and maintenance tasks, such as equipment inspection and data collection.
3. Auxiliary personnel: Assist technicians in equipment handling, site cleaning and other work.

Team members need to participate in professional training regularly to update their knowledge and skills to adapt to the constantly developing fiber optic technology.

V. Detection and Maintenance Plan

Daily inspection (daily)

1. Fiber optic cable inspection: Check the appearance of the fiber optic cables to see if there are any signs of damage, breakage, aging, etc.; check if the cable markings are clear; check if the cable laying path is squeezed, entangled or affected by other external forces.
2. Fiber optic connection equipment inspection: Check if the cabinet doors of the fiber optic distribution frame (ODF) are well closed and the markings are clear; check if the fiber optic adapters, couplers, flanges and other connecting parts are loose or oxidized; check if there is dust or foreign matter on the ports of the fiber optic connection equipment.
3. Fiber optic transmission equipment inspection: Observe the indicator light status of optical transceivers, fiber optic transceivers, wavelength division multiplexing (WDM)/dense wavelength division multiplexing (DWDM) equipment, optical amplifiers, etc., to determine whether the equipment is operating normally; check the operating temperature and fan operation of the equipment, and listen for abnormal sounds from the equipment.

Regular inspection

1. Weekly inspection
   • Fiber optic cable inspection: Use an optical power meter to measure the optical power of some important fiber optic links, record the measured data and compare it with the historical data to analyze the trend of optical power change.
   • Fiber optic connection equipment inspection: Clean the fiber optic adapters, couplers and other connecting parts, use an optical power meter to measure the connection loss, and ensure that the connection loss is within the normal range.
   • Fiber optic transmission equipment inspection: Check the configuration parameters of fiber optic transmission equipment to ensure correct configuration; check the operation log of the equipment to analyze whether there are any abnormal event records.
2. Monthly inspection
   • Fiber optic cable inspection: Use an optical time-domain reflectometer (OTDR) to detect some fiber optic lines, measure the attenuation, loss, length and other parameters of the fiber optic, and determine whether there are any breakpoints or other faults in the fiber optic line.
   • Fiber optic connection equipment inspection: Carry out a comprehensive inspection of the fiber optic distribution frame (ODF), including whether the fiber optic winding is standard and whether the port connection is firm; conduct performance tests on the fiber optic connection equipment, such as insertion loss and return loss.
   • Fiber optic transmission equipment inspection: Conduct functional testing of optical transceivers and fiber optic transceivers to ensure that the equipment's data transmission function is normal; conduct detection of parameters such as wavelength accuracy and channel power balance for wavelength division multiplexing (WDM)/dense wavelength division multiplexing (DWDM) equipment.
3. Quarterly inspection
   • Comprehensive fiber optic cable inspection: Use OTDR to conduct detailed inspection of all fiber optic lines, establish a complete fiber optic line file, and record various parameters and test results of fiber optic.
   • Comprehensive inspection of fiber optic connection equipment: Clean, inspect and maintain all fiber optic connection equipment, replace aging or damaged parts; evaluate the performance of fiber optic connection equipment and optimize or upgrade according to the evaluation results.
   • In-depth inspection of fiber optic transmission equipment: Conduct in-depth inspection of fiber optic transmission equipment, including inspection of internal circuits, optical modules and other components; upgrade software and optimize parameters to improve equipment performance and stability.

Special Period Inspection

1. Before major events, the launch of important businesses or peak communication periods, conduct a comprehensive inspection and pre-maintenance of fiber optic equipment to ensure that the equipment can meet the high-load communication needs.
2. After severe weather (such as heavy rain, strong wind, thunder and lightning), conduct emergency inspection of fiber optic equipment, focusing on checking whether fiber optic cables are damaged, and repairing damaged equipment in time.

VI. Detection and Maintenance Methods

1. Appearance inspection: Visually inspect the fiber optic equipment for any physical damage, deformation, or discoloration.
2. Performance Testing: Use professional testing instruments, such as optical power meters, OTDRs, and spectrum analyzers, to test various performance parameters of the fiber optic equipment and obtain accurate data.
3. Functional Verification: Simulate real-world business scenarios to verify the data transmission and signal conversion functions of the fiber optic equipment, ensuring that the equipment operates normally.
4. Cleaning and Maintenance: Regularly use dedicated cleaning tools and materials to clean the fiber optic equipment, removing dust, oil, and other impurities; maintain key components of the equipment, such as applying thermal grease and lubricating moving parts.
5. Fault Diagnosis and Repair: When a fiber optic device malfunctions, determine the cause of the malfunction by analyzing the malfunction phenomenon and testing the device performance; take appropriate repair measures based on the cause of the malfunction, such as replacing components or re-splicing optical fibers.

VII. Fault Handling Process

1. Fault Report: When a fiber optic equipment malfunction is discovered, on-site personnel should immediately report it to the monitoring center. The report should include the malfunction phenomenon, location, and scope of impact.
2. Fault Diagnosis: After receiving the fault report, the monitoring center should immediately organize technical personnel to analyze and diagnose the fault, determining the type and possible causes.
3. Fault Handling: Based on the fault diagnosis results, a fault handling plan is developed, and maintenance personnel are dispatched to the fault site for handling. During the handling process, maintenance personnel should strictly follow operating procedures to ensure safety and repair quality.
4. Fault Verification: After the fault handling is completed, the fiber optic equipment is tested and verified to ensure that the equipment has resumed normal operation and the fault has been completely resolved.
5. Fault Record and Summary: Detailed records of the fault handling process are kept, including the cause of the fault, handling methods, and handling time; regularly analyze and summarize fault records, summarize lessons learned, and propose improvement measures to prevent similar faults from recurring.

VIII. Maintenance Tools and Materials

1. Testing Tools: Optical power meter, optical time-domain reflectometer (OTDR), spectrum analyzer, fiber optic fusion splicer, fiber optic microscope, fiber optic cleaning tools (such as cleaning paper, cleaning solution, compressed air can), etc.
2. Maintenance Materials: Fiber optic jumpers, fiber optic adapters, fiber optic couplers, optical modules, pigtails, fiber optic protective tubes, thermal grease, etc.

IX. Safety Measures

1. When operating fiber optic equipment, inspection and maintenance personnel must strictly adhere to safety operating procedures and wear necessary protective equipment, such as safety glasses and gloves.
2. When performing fiber optic splicing and other operations, care should be taken to prevent laser damage to the eyes, avoiding direct viewing of the laser beam from the fiber optic port.
3. When performing energized operations on fiber optic equipment, anti-static measures should be taken to prevent static electricity from damaging the equipment.
4. When laying or removing fiber optic cables, care should be taken to avoid tripping or scratching personnel with the cables.

X. Cost Budget

1. Personnel Costs: Includes wages, bonuses, and benefits for inspection and maintenance personnel.
2. Tools and Equipment Costs: Cost of purchasing inspection and maintenance tools, testing instruments, and spare equipment.
3. Material Costs: Cost of purchasing maintenance materials and consumables.
4. Training Costs: Cost of providing professional training for inspection and maintenance personnel.
5. Other Costs: Includes transportation costs, communication costs, and office costs.

XI. Effect Evaluation

1. Establish an evaluation index system, including indicators such as the failure rate of fiber optic equipment, fault repair time, optical power stability, and data transmission bit error rate.
2. Regularly evaluate the effectiveness of inspection and maintenance work, collect relevant data, and analyze the changing trends of various indicators.
3. Based on the evaluation results, summarize the experience and lessons learned from the inspection and maintenance work, adjust the inspection and maintenance plan and methods in a timely manner, and continuously improve the quality and efficiency of the inspection and maintenance work.