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Page "Laser diode" ¶ 12
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If and diode
If the launch fibre is underfilled, for example as a consequence of being energized by a laser diode or edge-emitting LED, there will be no effect on the mode power distribution or loss measurements.
If multimode fiber bandwidth is measured using a laser diode directly coupled to its input, the resulting measurement can vary by as much as an order of magnitude.
If high precision is not required it is enough to bias a diode with any constant low current and use its − 2 mV /˚ C thermal coefficient for temperature calculation, however this requires calibration for each diode type.
If the voltage increases beyond the design limit, the diode goes into avalanche breakdown, causing the harmful voltage to be conducted to ground.
If the input sources are low resistive, an unlimited current will flow directly through the " diode bridge " between the two input sources and will damage them.
If component ratings are exceeded, the diode may fail as a permanent short circuit ; in such cases, protection may remain but normal circuit operation is terminated in the case of low-power signal lines.
If the injection current is rapidly switched off at the proper time, for example using a step recovery diode circuit, a single 50 ps light pulse can be generated.
If the ratio between the first and second resistor is chosen properly, the first order effects of the temperature dependency of the diode and the PTAT current will cancel out.
If a diode is reverse-biased, the voltage at the cathode is higher than that at the anode.
If the source has enough modulation bandwidth, as in the case of a laser diode, the source can be modulated directly.

If and is
If the circumstances are faced frankly it is not reasonable to expect this to be true.
If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.
If a work is divided into several large segments, a last-minute drawing of random numbers may determine the order of the segments for any particular performance.
If they avoid the use of the pungent, outlawed four-letter word it is because it is taboo ; ;
If Wilhelm Reich is the Moses who has led them out of the Egypt of sexual slavery, Dylan Thomas is the poet who offers them the Dionysian dialectic of justification for their indulgence in liquor, marijuana, sex, and jazz.
If he is the child of nothingness, if he is the predestined victim of an age of atomic wars, then he will consult only his own organic needs and go beyond good and evil.
If it is an honest feeling, then why should she not yield to it??
If he thus achieves a lyrical, dreamlike, drugged intensity, he pays the price for his indulgence by producing work -- Allen Ginsberg's `` Howl '' is a striking example of this tendency -- that is disoriented, Dionysian but without depth and without Apollonian control.
If love reflects the nature of man, as Ortega Y Gasset believes, if the person in love betrays decisively what he is by his behavior in love, then the writers of the beat generation are creating a new literary genre.
If he is good, he may not be legal ; ;
If the man on the sidewalk is surprised at this question, it has served as an exclamation.
If the existent form is to be retained new factors that reinforce it must be introduced into the situation.
If we remove ourselves for a moment from our time and our infatuation with mental disease, isn't there something absurd about a hero in a novel who is defeated by his infantile neurosis??
If many of the characters in contemporary novels appear to be the bloodless relations of characters in a case history it is because the novelist is often forgetful today that those things that we call character manifest themselves in surface behavior, that the ego is still the executive agency of personality, and that all we know of personality must be discerned through the ego.
If he is a traditionalist, he is an eclectic traditionalist.
If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.
If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.

If and driven
If the Bastarnae remained an identifiable group, it is highly likely that they participated in the vast Gothic-led migration, driven by Hunnic pressure, that was admitted into Moesia by emperor Valens in 376 and eventually defeated and killed Valens at Adrianople in 378.
If mineral acid is added to the acetic acid mixture, increasing the concentration of hydronium ion, the amount of dissociation must decrease as the reaction is driven to the left in accordance with this principle.
If sugars are heated so that all water of crystallisation is driven off, then caramelization starts, with the sugar undergoing thermal decomposition with the formation of carbon, and other breakdown products producing caramel.
* Overrunning clutch or freewheel: If some external force makes the driven member rotate faster than the driver, the clutch effectively disengages.
If a chemical reaction is driven by an external applied voltage, as in electrolysis, or if a voltage is created by a chemical reaction as in a battery, it is an electrochemical reaction.
If the current is driven in the opposite direction by imposing an external potential, then work is done on the cell to drive electrolysis.
If an external time dependent force is present, the harmonic oscillator is described as a driven oscillator.
If the graphics is driven by an application program, plot commands can be fed to gnuplot via a pipe.
If ATO fails but TBTC is still operational, the trains can still be manually driven at line speed.
If a capacitor is driven with a time-varying voltage that changes rapidly enough, then the polarization of the dielectric cannot follow the signal.
If the PSAP receives calls from the telephone company on older analog trunks, they are usually Pulse driven circuits.
If not otherwise specified, " right " and " left " can be reversed to reflect jurisdictions where vehicles are driven on the left.
If that antenna is driven with 1 ampere at a frequency 20 % higher, it will still radiate as efficiently but in order to do that about 200 volts would be required due to the change in the antenna's impedance which is now largely reactive ( voltage out of phase with the current ).
If instead we assume that the volatility has a randomness of its own — often described by a different equation driven by a different Brownian Motion — the model is called a stochastic volatility model.
If the torque applied to one of the drive wheels exceeds the threshold of traction, then that wheel will spin, and thus only provide torque at each other driven wheel limited by the sliding friction at the slipping wheel.
If one belt broke, the vehicle could still be driven.
If the reporter gene integrates near an enhancer, its expression will reflect the expression pattern driven by that enhancer.
If the modulator is driven at the same frequency as the cavity-mode spacing Δν, then these sidebands correspond to the two cavity modes adjacent to the original mode.
If the development is technology driven then R & D is directed toward developing that market research indicates will meet an unmet need.
If the Serbs had broken through the Bulgarian defences, they might have doomed the 2nd Bulgarian Army and driven out the Bulgarians entirely out of Macedonia.
If the chairlift stops suddenly ( as from use of the system emergency brake ), the carrier's arm connecting to the grip pivots smoothly forward — driven by the chair's inertia — and maintains friction ( and seating angle ) between the seat and passenger.
If cattle are driven into, or of their own accord enter, the water, they are commonly not molested ; but if by chance some unusually big or ferocious specimen of these fearsome fishes does bite an animal — taking off part of an ear, or perhaps of a teat from the udder of a cow — the blood brings up every member of the ravenous throng which is anywhere near, and unless the attacked animal can immediately make its escape from the water it is devoured alive.
If he finds that his deeds were driven by ulterior motives or improper thoughts, let him search for the positive aspects within them.
If the input differential voltage changes significantly ( more than about a hundred millivolts ), the base-emitter junction of the transistor driven by the lower input voltage becomes backward biased and its collector voltage reaches the positive supply rail.

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