General Photonics Catalog 2018


Programmable Optical Delay Generator - TimeRITE™ (ODG-101)

Generating programmable time delay from nanoseconds to milliseconds is important for various applications ranging from data center testing to wireless communications to radar, optical communications, and measurement systems. General Photonics’ TimeRITE™ programmable optical delay generator is the first such product on the market. With a total delay range up to 2 ms (600 km) and a delay resolution up to 12 bits, this easy-to-use instrument features low insertion loss (~0.6 dB per bit), low delay dependent loss (DDL<0.2 dB), low polarization dependent loss, and fast delay changing speed (<10 ms). When operating in manual mode, different delay values can be selected and stepped up and down using the front panel


thumb wheel. When in auto mode, the instrument scans through a set of delays with user-defined range, starting and stopping values, step size, and time interval between delay changes. The instrument also features double-pass and quadruple pass modes to increase the total delay range by passing light through the optical path multiple times. A polarization maintaining option is also available for the double-pass input and output ports. Access ports for connecting to optical amplifiers are available upon request. By connecting a fiber optic RF or digital transmitter at the input and a fiber optic RF or digital receiver at the output, programmable delay for RF or digital signals can be readily obtained. This instrument can also be used to emulate signal delay and chromatic dispersion in fiber communication systems. At General Photonics, we manage delay to make your timing right.


Features: • Data rate & data format independent • Compact size & high resolution

Operating Wavelength Range

1310 ± 30 or 1550 ± 30nm

Up to 2 ms or 600 km in vacuum for quadruple pass (150km single-pass). User selectable at time of purchase.

Optical Delay Range 1

Optical Delay Resolution Minimum Delay Step Size Optical Delay Accuracy 2

4 to 12 bits, user selectable at time of purchase

• Large delay range • Low insertion loss

1 ns or 30 cm in vacuum, single pass ±5 meter in vacuum, single pass

• Fast delay switching speed • Low delay dependent loss Applications:

Delay Change Speed

10 ms

< 50 Hz

Delay Switching Frequency Residual Optical Delay

2m + 0.5m per bit

0.6 dB per bit plus 0.3 dB/km for single pass ports 2x single pass IL + 1.5 dB for double pass option 4x single pass IL + 5.5 dB for quadruple pass option 0.2 dB single pass, less for double & quadruple pass 55 dB, excluding contributions from fiber Rayleigh and Brillouin scatterings (for transmission mode) > 18 dB for double-pass ports with PM option 0.2 dB, single pass

• Data center time delay & jitter impact testing • Cloud computing delay & jitter impact testing • Wireless base station delay test & calibration • Radar range calibration • RF link emulation • Laser linewidth & phase noise measurement Related Products: • Components Tech Info: • Programmable optical delay generator with uniform output and double-delay capability FAQ: • Delay Lines

Insertion Loss 3,4,5

Delay Dependent Loss

Return Loss

Extinction Ratio

Optical Power Damage Threshold

300 mW

Operating Temperature Storage Temperature Fiber Type (Delay Fiber)

0 to 40 °C -20 to 60 °C

SMF-28 compatible

Fiber Type (Double Pass Port Input/Output Fiber)

SMF-28 or PM Panda fiber 100 – 240 VAC, 50 – 60 Hz USB, RS-232, Ethernet, DB25

Power Supply Control Interface

19” rack mount, 20” depth; height depends on delay length (3U height for up to 0.125 ms delay, single pass)


Notes: 1. Double-pass option can use both single and double-pass optical paths. Quadruple-pass option is intended for applications that require extremely long delays, and includes quadruple-pass optical path only.

2. For total delay less than 20 km. 3. With SMF-28 fiber for delay path. 4. Double pass: input can be SM or PM.Quadruple pass: PM input only. 5. Excluding connectors.

Ordering Information:

ODG — 101 —

Delay Range: (single pass, in µs): 0 - 500

Multi-Pass Option: 1 = single 2 = double 4 = quadruple

Resolution (# bits): 4 - 12

Wavelength: 13 = 1310 15 = 1550

Fiber Type: (double pass input/ output fiber): SS = SM PP = PM 00 = no double-pass

Connector Type: FC/PC, FC/APC

General Photonics Corporation | 909.590.5473 |


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