HP 11980A Fiber-Optic Interferometer

The HP 11980A is a Mach-Zehnder interferometer of fixed delay. Used with an HP 71400 series or HP 83810B lightwave signal analyzer, it allows you to measure chirp and frequency modulation (FM) on DFB lasers. Traditional measurements of laser linewidth on single-line lasers can also be made.

Together the interferometer, lightwave signal analyzer, and a gateable RF source permit the display of a true power spectrum of single-frequency lasers. This includes the display of intensity modulation linewidth and components of chirp caused by the intensity modualtion.

Option 005 replaces the standard 0.76 km of delay with 5.2 km to measure laser linewidth down to 30 kHz.

[ Features ]

Linewidth measurements
Chirp/FM characteristic measurements
Wavelength from 1250 nm to 1600 nm

[ Specifications ]

Optical insertion loss:			1300 nm: <8 dB
					1550 nm: <8 dB

Wavelength range (characteristic):	1250 to 1600 nm

Delay time (characteristic):		3.5 usec / 25 usec with Opt 005

Optical Connectors:
Single-mode fiber connectors:		Diamond HMS-10/HP, FC/PC, ST, Biconic, DIN

Weight:                                 4 kg (8 lb)

[ Ordering ]

HP 11980A Fiber-Optic Interferometer Opt 005 5 km of fiber (micro sec. delay) Connector Interface Options (choose one): Opt 011 Diamond HMS-10/HP Connector Opt 012 FC/PC Connector Opt 013 DIN 47256 Connector Opt 014 ST Connector Opt 015 Biconic Connector

Available accessories for this product include:

HP 71400C Lightwave Signal Analyzer

HP 71401C Lightwave Signal Analyzer

[ Key Literature ]

HP 11980A Fiber-Optic Interferometer ( PDF)

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[ Assistance ]

To help you make the right product choices

Local Sales Office

[ Related ]

Related product families available online:

Lightwave Accessories