Sharp Actius PC-GP20 Uživatelský manuál stáhnout pdf (Strana 4)

(303) 464-1919 www.dbmoptics.com

Model 4200 Tunable Laser Source

Turn Your TLS Into a Fully-controlled and Characterized

Optical Source

Polarization Scrambling

Add the –957I Polarization Scrambler Option to the 4200 and turn on and off high-speed

polarization scrambling--turning your TLS output into a randomized polarization signal. This

eliminate the effects of birefringence in your optical path.

Polarization State Control

The –953I 4- or 6-state polarization controller enables deterministic control over the output

state of the signal. The –953I provides 4 or 6 orthogonal states for use in polarization

analysis—all in a low cost, fully integrated package. With the –953E Option, an external 8169

polarization controller can be used under direct control of the TLS.

Attenuation

With either the –921 or the –922 attenuator, 0 to 20 dB or 0 to 40 dB of attenuation can be

added (respectively) and controlled from either the front panel or remotely. Alternatively, add

the upcoming –923 Precision Superposition Dual Attenuator and achieve attenuation linearity

in excess of 0.05%. By implementing dual path attenuators with shutters, exact divide-by-two

output powers can be obtained.

Wavelength Referencing

Add the –401 or –410 Option to the 4200 and get real-time calibration of wavelength

accuracy. By connecting through GPIB or Ethernet (or using the USB flash memory card) it is

possible to obtain an accurate indication of the wavelength of the laser to <1pm (–410 ) or

<1.8 pm (–401 with gas cell) or < 5 pm (–401).

Output Power Characterization

Add a –201 Option Optical Power Meter to the 4200 and get a full characterization of the

output power at every wavelength.

Output Shutter

Add a model –310 shutter for fast stabilization power control of any tunable laser. The base

laser can be turned on and off, but all TLS take some time to stabilize after current is applied

to the laser. Using the shutter eliminates the stabilization time after turn-on.

Extended Polarization Extinction Ratio

A standard TLS has between 15 and 20 dB of extinction ratio. Much of this is due to a

mechanism called polarization state wobble. With the –959 Option, an integrated polarizer

stage is added to increase the polarization extinction ratio. Note that multiple –959 options

can be added.

GP-15

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Sharp Actius PC-GP20 Uživatelský manuál Strana 4