# \#fbg-technology **URL:** https://forum.ofscn.net/tag/fbg-technology/11.md [Latest](https://forum.ofscn.net/latest.md) · [Categories](https://forum.ofscn.net/categories.md) · [Tags](https://forum.ofscn.net/tags.md) --- ## [What is a "fiber laser"?](https://forum.ofscn.net/t/what-is-a-fiber-laser/3185)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:34am UTC](https://forum.ofscn.net/t/what-is-a-fiber-laser/3185 "2026-10-28T06:34:29Z")
Why can optical fibers emit powerful lasers on their own? --- ## [Can optical fibers measure the geomagnetic field?](https://forum.ofscn.net/t/can-optical-fibers-measure-the-geomagnetic-field/3183)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:34am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-the-geomagnetic-field/3183 "2026-10-28T06:34:03Z")
How does it sense tiny changes in Earth's magnetic field? --- ## [What is a "fiber optic sensor network"?](https://forum.ofscn.net/t/what-is-a-fiber-optic-sensor-network/3181)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:33am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-sensor-network/3181 "2026-10-28T06:33:49Z")
Why can one fiber optic cable connect hundreds of sensors in series? Won’t they interfere with each other? --- ## [光纤能测冰厚吗？ | Can optical fibers measure ice thickness?](https://forum.ofscn.net/t/can-optical-fibers-measure-ice-thickness/3180)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:33am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-ice-thickness/3180 "2026-10-28T06:33:09Z")
在电线上挂着，光纤是怎么知道上面结了多厚的冰？ --- ## [What is "fiber optic self-healing"?](https://forum.ofscn.net/t/what-is-fiber-optic-self-healing/3178)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:32am UTC](https://forum.ofscn.net/t/what-is-fiber-optic-self-healing/3178 "2026-10-28T06:32:25Z")
I've heard that some damaged optical fibers can be restored by heating them. Is this true? --- ## [Can optical fibers detect acid rain?](https://forum.ofscn.net/t/can-optical-fibers-detect-acid-rain/3177)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:31am UTC](https://forum.ofscn.net/t/can-optical-fibers-detect-acid-rain/3177 "2026-10-28T06:31:59Z")
In environmental monitoring, how does fiber optics sense the pH of rainwater? --- ## [What is fiber optical nonlinearity?](https://forum.ofscn.net/t/what-is-fiber-optical-nonlinearity/3176)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:31am UTC](https://forum.ofscn.net/t/what-is-fiber-optical-nonlinearity/3176 "2026-10-28T06:31:37Z")
Why does fiber optic cable behave erratically and produce strange light when the light is too strong? --- ## [Can optical fibers measure vacuum level / pressure?](https://forum.ofscn.net/t/can-optical-fibers-measure-vacuum-level-pressure/3175)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:30am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-vacuum-level-pressure/3175 "2026-10-28T06:30:57Z")
How does fiber optics sense the pressure inside a vacuum chamber in a semiconductor factory? --- ## [Can optical fibers measure wind speed?](https://forum.ofscn.net/t/can-optical-fibers-measure-wind-speed/3173)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:30am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-wind-speed/3173 "2026-10-28T06:30:24Z")
On wind turbines, how do optical fibers sense the force of the wind blowing? --- ## [What is a fiber optic salt spray test?](https://forum.ofscn.net/t/what-is-a-fiber-optic-salt-spray-test/3174)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:30am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-salt-spray-test/3174 "2026-10-28T06:30:23Z")
On the seaside or offshore platforms, will optical fibers be damaged by sea winds? --- ## [What is a "fiber optic level gauge"?](https://forum.ofscn.net/t/what-is-a-fiber-optic-level-gauge/3172)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:26am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-level-gauge/3172 "2026-10-28T06:26:55Z")
How much oil is left in the tank, and how does fiber optics "see" it? --- ## [Can optical fibers measure pressure?](https://forum.ofscn.net/t/can-optical-fibers-measure-pressure/3170)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:26am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-pressure/3170 "2026-10-28T06:26:15Z")
If you bury it in the soil, can it measure how many tons of vehicles are pressing down on it? --- ## [Can optical fibers measure vibration?](https://forum.ofscn.net/t/can-optical-fibers-measure-vibration/3168)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:21am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-vibration/3168 "2026-10-28T06:21:50Z")
When a machine vibrates severely, can optical fiber measure how many times it shakes per second? --- ## [What is a "fiber Bragg grating (FBG)"?](https://forum.ofscn.net/t/what-is-a-fiber-bragg-grating-fbg/3167)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:21am UTC](https://forum.ofscn.net/t/what-is-a-fiber-bragg-grating-fbg/3167 "2026-10-28T06:21:49Z")
Is it the "ruler" in the optical fiber? How does it measure temperature through color changes? --- ## [Can fiber optics prevent wiretapping? | Are optical fibers tap-proof / anti-eavesdropping?](https://forum.ofscn.net/t/are-optical-fibers-tap-proof-anti-eavesdropping/3166)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:21am UTC](https://forum.ofscn.net/t/are-optical-fibers-tap-proof-anti-eavesdropping/3166 "2026-10-28T06:21:14Z")
Why is fiber optic communication considered more secure than cable communication in classified facilities? --- ## [What is a "chalcogenide optical fiber"?](https://forum.ofscn.net/t/what-is-a-chalcogenide-optical-fiber/3165)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:20am UTC](https://forum.ofscn.net/t/what-is-a-chalcogenide-optical-fiber/3165 "2026-10-28T06:20:20Z")
What is the use of this optical fiber, which sounds like a chemical reagent, in a night vision device? --- ## [Can optical fibers transmit infrared thermal imaging?](https://forum.ofscn.net/t/can-optical-fibers-transmit-infrared-thermal-imaging/3164)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:20am UTC](https://forum.ofscn.net/t/can-optical-fibers-transmit-infrared-thermal-imaging/3164 "2026-10-28T06:20:09Z")
Why can't ordinary optical fibers transmit thermal imaging light? What special materials are needed? --- ## [What is a "fiber optic shape sensor"?](https://forum.ofscn.net/t/what-is-a-fiber-optic-shape-sensor/3159)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:19am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-shape-sensor/3159 "2026-10-28T06:19:44Z")
Why can optical fibers display their bending shape in real-time on a computer, much like a snake? --- ## [What is a "sapphire optical fiber"?](https://forum.ofscn.net/t/what-is-a-sapphire-optical-fiber/3163)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:19am UTC](https://forum.ofscn.net/t/what-is-a-sapphire-optical-fiber/3163 "2026-10-28T06:19:44Z")
Can this fiber optic made of gemstones withstand fire above 1000°C? --- ## [Can optical fibers measure rotational speed / RPM?](https://forum.ofscn.net/t/can-optical-fibers-measure-rotational-speed-rpm/3161)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 28, 2026, 6:19am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-rotational-speed-rpm/3161 "2026-10-28T06:19:25Z")
How does a fiber optic count revolutions on a high-speed rotating motor shaft? --- ## [What is "anti-counterfeiting" identification?](https://forum.ofscn.net/t/what-is-anti-counterfeiting-identification/3145)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 26, 2026, 11:29am UTC](https://forum.ofscn.net/t/what-is-anti-counterfeiting-identification/3145 "2026-10-26T11:29:43Z")
How can I tell if the OFSCN® patch cord I purchased is genuine from the manufacturer? --- ## [What is "reserved wavelength margin / spatial allocation"?](https://forum.ofscn.net/t/what-is-reserved-wavelength-margin-spatial-allocation/3134)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 5:09am UTC](https://forum.ofscn.net/t/what-is-reserved-wavelength-margin-spatial-allocation/3134 "2026-10-23T05:09:17Z")
Why can't the 40 nanometer bandwidth be completely filled with sensors? How much "breathing room" should be left? --- ## [Can I splice optical fibers myself?](https://forum.ofscn.net/t/can-i-splice-optical-fibers-myself/3136)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 5:08am UTC](https://forum.ofscn.net/t/can-i-splice-optical-fibers-myself/3136 "2026-10-23T05:08:31Z")
If the fiber optic cable breaks, do I have to buy a fusion splicer that costs tens of thousands of yuan? Is there a simpler way? --- ## [Can optical fibers be used on high-voltage power lines?](https://forum.ofscn.net/t/can-optical-fibers-be-used-on-high-voltage-power-lines/3135)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 5:08am UTC](https://forum.ofscn.net/t/can-optical-fibers-be-used-on-high-voltage-power-lines/3135 "2026-10-23T05:08:19Z")
Can hundreds of thousands of volts of high voltage break down optical fibers? Does the metal packaging need to be grounded? --- ## [光纤能测位移吗？ | Can optical fibers measure displacement?](https://forum.ofscn.net/t/can-optical-fibers-measure-displacement/3133)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:50am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-displacement/3133 "2026-10-22T08:50:30Z")
房子裂缝了，光纤是怎么测出裂缝开了几毫米的？ --- ## [What is a "side-polished optical fiber"?](https://forum.ofscn.net/t/what-is-a-side-polished-optical-fiber/3132)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:41am UTC](https://forum.ofscn.net/t/what-is-a-side-polished-optical-fiber/3132 "2026-10-22T08:41:25Z")
Why deliberately remove half of the fiber? Is it to allow the light to contact the outside? --- ## [Can optical fibers measure chemical composition?](https://forum.ofscn.net/t/can-optical-fibers-measure-chemical-composition/3129)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:41am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-chemical-composition/3129 "2026-10-22T08:41:12Z")
If you soak the fiber optic connector in a medicinal solution, can it analyze the concentration? --- ## [Can optical fibers measure electric current?](https://forum.ofscn.net/t/can-optical-fibers-measure-electric-current/3125)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:40am UTC](https://forum.ofscn.net/t/can-optical-fibers-measure-electric-current/3125 "2026-10-22T08:40:42Z")
In high-voltage substations of hundreds of thousands of volts, how can optical fibers measure current without contacting the wires? --- ## [What is a "fiber optic hydrophone"?](https://forum.ofscn.net/t/what-is-a-fiber-optic-hydrophone/3127)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:40am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-hydrophone/3127 "2026-10-22T08:40:41Z")
Are they “ears” made of fiber optics? How do they listen for submarines underwater? --- ## [What is a "fiber optic gyroscope" (FOG)?](https://forum.ofscn.net/t/what-is-a-fiber-optic-gyroscope-fog/3124)
**Author:** [@VoidWalker](https://forum.ofscn.net/u/VoidWalker)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 8:40am UTC](https://forum.ofscn.net/t/what-is-a-fiber-optic-gyroscope-fog/3124 "2026-10-22T08:40:05Z")
Why do missiles and aircraft use coiled fiber optics for navigation? [Next page](https://forum.ofscn.net/tag/fbg-technology/11.md?match_all_tags=true&page=1&tags%5B%5D=fbg-technology)