Fiber-Optics Obstacle Course - Revision history

Bsboggs: /* Activities */

2018-05-10T01:54:53Z

Activities

Bsboggs: /* Activities */

2018-05-09T20:08:42Z

Activities

← Older revision		Revision as of 20:08, 9 May 2018
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	## Measure its optical power vs. pump current/power curve.		## Measure its optical power vs. pump current/power curve.
	## Measure its optical spectrum both just below and well above threshold. Is there a difference? Can you explain?		## Measure its optical spectrum both just below and well above threshold. Is there a difference? Can you explain?
	~~- Submit a write-up outlining your activities, results and the answers to any questions asked above.~~



	* '''CLEAN UP THE OBSTACLE COURSE SETUP AFTER USE'''		* '''CLEAN UP THE OBSTACLE COURSE SETUP AFTER USE'''

Bsboggs: /* Activities */

2018-05-09T20:06:37Z

Activities

← Older revision		Revision as of 20:06, 9 May 2018
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	## Break your patch cable in the middle and repair it with a fusion splice (see fusion splicer manual [[Media:X77_Fusion_Splicer.pdf\| Fusion Splicer Manual]] and eBook.<br>		## Break your patch cable in the middle and repair it with a fusion splice (see fusion splicer manual [[Media:X77_Fusion_Splicer.pdf\| Fusion Splicer Manual]] and eBook.<br>
	## Measure the power loss through your fusion spliced patch cable.<br>		## Measure the power loss through your fusion spliced patch cable.<br>
	## ~~Optional:~~ Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler (with a 10x objective) to couple a free space HeNe beam into the fiber (our coupler is not quite as that shown at the right). Observe the transverse modes of the (at HeNe wavelength) MM fiber. See if, by bending the fiber, you can observe a few different transverse modes.<br>
			## Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].
			## How many transverse modes should you expect the fiber/HeNe system to have?
	# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]).		# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]).
	## Try to create linear polarization with ~ 20dB extinction ratio.		## Try to create linear polarization with ~ 20dB extinction ratio.
	## Try to create circular polarization.		## Try to create circular polarization.
	# ~~Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler (shown at right) and a video camera to observe the transverse modes~~ of ~~a MM fiber~~.~~<br>~~		# Read Agrawal's ''Applications of Nonlinear Fiber Optics'' Chapter 5 sections 5.1 and 5.2 (on APL bookshelf in lab). Although we will not be building a short-pulse fiber laser, you may find sections 5.3 and 5.4 interesting (pulsed fiber laser projects are available as advanced projects in the APL).
	~~# Calculate the V number of the light/fiber system~~. ~~[https://www~~.rp-~~photonics~~.~~com/v_number~~.~~html Read about~~ the ~~V number here]~~.		# Construct an Erbium-Doped CW SM Fiber Ring Laser.
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		## Measure its optical power vs. pump current/power curve.
			## Measure its optical spectrum both just below and well above threshold. Is there a difference? Can you explain?
	- Submit a write-up outlining your activities, results and the answers to any questions asked above.		- Submit a write-up outlining your activities, results and the answers to any questions asked above.

Bsboggs: /* Activities */

2018-04-18T17:53:58Z

Activities

← Older revision		Revision as of 17:53, 18 April 2018
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	## Try to create linear polarization with ~ 20dB extinction ratio.		## Try to create linear polarization with ~ 20dB extinction ratio.
	## Try to create circular polarization.		## Try to create circular polarization.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler (shown at right) and a video camera to observe the transverse modes of a MM fiber.<br>
	# Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].		# Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.

Bsboggs: /* Activities */

2018-04-17T19:42:25Z

Activities

← Older revision		Revision as of 19:42, 17 April 2018
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	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>
	# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]).		# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]).
	## Try to create linear polarization with ~~at least a 10dB~~ extinction ratio.		## Try to create linear polarization with ~ 20dB extinction ratio.
	## Try to create circular polarization.		## Try to create circular polarization.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>

Bsboggs: /* Activities */

2018-04-17T19:18:16Z

Activities

← Older revision		Revision as of 19:18, 17 April 2018
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	## Measure the power loss through your fusion spliced patch cable.<br>		## Measure the power loss through your fusion spliced patch cable.<br>
	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>
	# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.		# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]).
			## Try to create linear polarization with at least a 10dB extinction ratio.
			## Try to create circular polarization.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>
	# Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].		# Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].

Bsboggs: /* Activities */

2018-04-17T18:13:51Z

Activities

← Older revision		Revision as of 18:13, 17 April 2018
Line 43:		Line 43:
	## Measure the power loss through your fusion spliced patch cable.<br>		## Measure the power loss through your fusion spliced patch cable.<br>
	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>

	# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.		# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>
			# Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.
	- Submit a write-up outlining your activities, results and the answers to any questions asked above.		- Submit a write-up outlining your activities, results and the answers to any questions asked above.

Bsboggs: /* Activities */

2018-04-17T18:08:39Z

Activities

← Older revision		Revision as of 18:08, 17 April 2018
Line 44:		Line 44:
	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>

	# Use free-space ~~fiber polarizer~~, ~~a fiber to~~ free space ~~coupler and~~ fiber polarization controller to measure extinction ratio ~~of in-fiber polarizer~~ ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\| see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.		# Use a fiber-to-free-space coupler, free-space polarizer, an in-fiber polarization controller and an IR power meter to measure the polarization extinction ratio ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\|see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.

Bsboggs: /* Activities */

2018-04-17T18:00:40Z

Activities

← Older revision		Revision as of 18:00, 17 April 2018
Line 44:		Line 44:
	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>

	# Use free-space fiber polarizer, a fiber to free space coupler and fiber polarization controller to measure extinction ratio of in-fiber polarizer ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\| see this explanation for how the polarization controller works]])		# Use free-space fiber polarizer, a fiber to free space coupler and fiber polarization controller to measure extinction ratio of in-fiber polarizer ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\| see this explanation for how the polarization controller works]]). Try to create linear polarization with at least a 10dB extinction ratio.
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.

Bsboggs: /* Activities */

2018-04-17T17:59:05Z

Activities

← Older revision		Revision as of 17:59, 17 April 2018
Line 44:		Line 44:
	## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>		## Optional: Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler to couple a free space beam into the SM fiber (our coupler is not quite as that shown at the right).<br>

	# Use in-fiber polarizer and fiber polarization controller to measure extinction ratio of in-fiber polarizer		# Use free-space fiber polarizer, a fiber to free space coupler and fiber polarization controller to measure extinction ratio of in-fiber polarizer ([[Media:In-Line_Fiber_Polarizer_Lab.pdf\| see this explanation for how the polarization controller works]])
	# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>		# Use a source, MM fiber, the fiber mode scrambler, the free-space-to-fiber coupler and a video camera to observe the transverse modes of a MM fiber.<br>
	# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.		# Construct an Erbium-Doped SM Fiber Ring Laser. Measure its optical power vs. pump current/power curve.

← Older revision		Revision as of 01:54, 10 May 2018
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	## Break your patch cable in the middle and repair it with a fusion splice (see fusion splicer manual [[Media:X77_Fusion_Splicer.pdf\| Fusion Splicer Manual]] and eBook.<br>		## Break your patch cable in the middle and repair it with a fusion splice (see fusion splicer manual [[Media:X77_Fusion_Splicer.pdf\| Fusion Splicer Manual]] and eBook.<br>
	## Measure the power loss through your fusion spliced patch cable.<br>		## Measure the power loss through your fusion spliced patch cable.<br>
	## Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler (with a 10x objective) to couple a free space HeNe beam into the fiber (our coupler is not quite as that shown at the right). Observe the transverse modes of the (at HeNe wavelength) MM fiber. See if, by bending the fiber, you can observe a few different transverse modes.<br>		## Break the fusion splice out of the patch cord leaving two partly-connectorized fibers. Strip and cleave the unconnectorized end of one of the fibers and use the free-space-to-fiber coupler (with a 10x objective) to couple a free space HeNe beam into the fiber (our coupler is not quite as that shown at the right). You should be able to (with a little persistence) get more than 1 mW of power out of the fiber. Observe the transverse modes of the (at HeNe wavelength) MM fiber. See if, by bending the fiber, you can observe a few different transverse modes. Can you identify the modes?<br>
	## Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].		## Calculate the V number of the light/fiber system. [https://www.rp-photonics.com/v_number.html Read about the V number here].
	## How many transverse modes should you expect the fiber/HeNe system to have?		## How many transverse modes should you expect the fiber/HeNe system to have?
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	## Try to create circular polarization.		## Try to create circular polarization.
	# Read Agrawal's ''Applications of Nonlinear Fiber Optics'' Chapter 5 sections 5.1 and 5.2 (on APL bookshelf in lab). Although we will not be building a short-pulse fiber laser, you may find sections 5.3 and 5.4 interesting (pulsed fiber laser projects are available as advanced projects in the APL).		# Read Agrawal's ''Applications of Nonlinear Fiber Optics'' Chapter 5 sections 5.1 and 5.2 (on APL bookshelf in lab). Although we will not be building a short-pulse fiber laser, you may find sections 5.3 and 5.4 interesting (pulsed fiber laser projects are available as advanced projects in the APL).
			# [[Media:Lasers_en.jar \| Download and run this applet]] to explore spontaneous emission, stimulated emission and lasing.
			## Using the applet's "One Atom" window (and no mirrors) explore ''spontaneous emission''. What can you say about the directional properties on a spontaneously emitted photon?
			## Using the applet's "Multiple Atoms" window (with mirrors), play around until you have a '''LASER''' ('''L'''ight '''A'''mplification do to '''S'''timulated '''E'''mission of '''R'''adiation). What can you say about the directional properties of a stimulated-emission photon?
	# Construct an Erbium-Doped CW SM Fiber Ring Laser.		# Construct an Erbium-Doped CW SM Fiber Ring Laser.
	## Measure its optical power vs. pump current/power curve.		## Measure its optical power vs. pump current/power curve.