When you install and terminate fiber optic cables, you always have to test them. A test should be conducted for each fiber optic cable plant for three main areas: continuity, loss, and power. And optical power meters are part of the toolbox essentials to do this. There are general-purpose power meters, semi-automated ones, as well as power meters optimized for certain types of networks, such as FTTx or LAN/WAN architectures. It’s all a matter of choosing the right gear for the need.
Here is a quick guide to fiber optic power meters and how they work.
Optical power meters are commonly used to measure absolute light power in dBm. For dBm measurement of light transmission power, proper calibration is essential. A fiber optic power meter is also used with an optical light source for measuring loss or relative power level in dB. To calculate the power loss, optic power meter is first connected directly to an optical transmission device through a fiber optic pigtail, and the signal power is measured. Then the measurements are taken at the remote end of the fiber cable.
Fiber optic power meter detects the average power of a continuous beam of light in an optical fiber network, tests the signal power of laser or light emitting diode (LED) sources. Light dispersion can occur at many points in a network due to faults or misalignments; the power meter analyzes the high-powered beams of long-distance single-mode fibers and the low-power multibeams of short-distance multimode fibers.
Important specifications for fiber optic power meters include wavelength range, optical power range, power resolution, and power accuracy. Some devices are rack-mounted or hand held. Others are designed for use atop a bench or desktop. Power meters that interface to computers are also available.
The fiber optic power meter is a special light meter that measures how much light is coming out of the end of the fiber optic cable. The power meter needs to be able to measure the light at the proper wavelength and over the appropriate power range. Most power meters used in datacom networks are designed to work at 850nm and 1300nn. Power levels are modest, in the range of –15 to –35dBm for multimode links, 0 to –40dBm for single mode links. Power meters generally can be adapted to a variety of connector styles such as SC, ST, FC, SMA, LC, MU, etc.
Generally, multimode fiber is tested with LEDs at both 850nm and 1300nm and single mode fiber is tested with lasers at 1310nm and 1550nm. The test source will typically be a LED for multimode fiber unless the fiber is being used for Gigabit Ethernet or other high-speed networks that use laser sources. LEDs can be used to test single mode fibers less than 5000 meters long, while a laser should be used for long single mode fibers.
Most fiber optic power meters are calibrated in linear units such as milliwatts or microwatts. They may also provide measurements in decibels referenced to one milliwatt or microwatt of optical power. Typically, fiber optic power meters include a removable adaptor for connections to other devices. By measuring average time instead of peak power, power meters remain sensitive to the duty cycle of digital pulse input streams.
Use fiber optic power meter and other useful fiber optic tool kits to ensure that your fiber optic system will operate smoothly.
A Quick Guide To Fiber Optic Power Meter
Q Fiber-Mart price-match guarantee?
A Fiber-Mart promises a price match guarantee. If you find a price lower than ours on the Qualified Internet Retailer sites listed below, and you meet the eligibility requirements listed below, we will match the price, or within 3 days of your Fiber-Mart purchase and we will give you the difference.
When requesting a price match, please be aware that prices will be compared on the following criteria:
(1). Our Price Match Guarantee does not apply when you use coupons, rebates, promotional offers, free shipping, or product-bundle pricing on the order.
(2). Price comparisons include the product price plus shipping & handling charges when calculating the competitor's total price in comparison to www.fs’s product price and lowest priced shipping method for that item.
(3). Our Price Match Guarantee does not apply to membership pricing.
(4). Our Price Match Guarantee is limited to up to three (3) of the same product, shipped to the same address.
(5). The Price Match Guarantee is subject to change at any time.
Qualified Internet Retailers: eBay.com, Amazon.com, BestBuy.com, Compusa.com, Hardware.com, TigerDirect.com, PROVANTAGE.com
Q Warranty---what is this?
A If any product proves defective during this warranty period, Fiber-Mart, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. In order to obtain sales under this warranty, customer must notify Fiber-Mart of the defect before the expiration of the warranty period and make suitable arrangements for the performance of sales. Customer shall be responsible for packaging and shipping the defective product to Fiber-Mart. Customer shall be responsible for paying all shipping charges, duties, taxes and any other charges for products returned to any other locations.
Q Lead-time---what is this?
A Lead time is the period between a customer's order and delivery of the final product. A small order of a pre-existing item may only have a few hours lead time, but a larger order of custom-made parts may have a lead time of weeks, months or even longer. Fiber-Mart produces and stocks a full range of transceivers and other fiber optic products. Normally we can ship within 24 hours, but for some products the lead-time will be 2-3 days or longer. We will notify you of the lead-time over 3 days.
Q Trusted by 5000+worldwide buyers---what is this?
A We are so proud of our products trusted by 5000+worldwide buyers.
Fiber-Mart R&D department with core technical knowledge provides strong innovative capability. Fiber-Mart outstanding performance can meet the need of the customer special requirements
We strive to keep our operating expense as low as possible and negotiate for the best prices so we can keep your prices the lowest possible.
We are convinced that path to success is through excellence and customer sales. Our customers are our number one priority. We know you have many choices of where to buy, so we do our best to provide the best products, at the best prices with the best possible support.
- 点击数：1902
